Kev lag luam 2024, Lub kaum hli ntuj
An-74 aircraft: specifications, duab
Lub dav hlau AN-74 yog lub dav hlau uas muaj keeb kwm ntev ntawm nws cov khoom tsim thiab tau ua pov thawj nws tus kheej zoo heev hauv kev xyaum. Peb yuav tham txog lub tsheb no hauv tsab xov xwm
Vim li cas Airbus 320 nrov?
Qhia tawm thaum lub 80s ntawm lub xyoo pua 20th, Airbus 320 txij thaum pib tau txawv los ntawm ntau qhov kev tsim kho tshiab uas lwm lub dav hlau ntawm tiam ntawd tsis muaj. Ua ntej, nyob rau hauv no aircraft, thawj zaug, tus tsav tsis ncaj qha cuam tshuam rau cov tswj, vim hais tias. muaj ib lub chaw taws teeb tswj qhov system. Nws kis tau cov lus txib los ntawm cov tswj tuav mus rau cov txheej txheem los ntawm kev xa hluav taws xob. Thib ob
Purge lub boiler: kev txiav txim ntawm kev tua, lub hom phiaj
Cov khoom siv boiler, ntxiv rau kev hloov kho raws sij hawm ntawm automation thiab kev saib xyuas ntawm kev pom kev zoo, kuj xav tau kev saib xyuas tsis tu ncua. Kev tiv thaiv kev saib xyuas muaj nyob rau hauv kev tu qhov chaw ntawm cov kav dej thiab cov kab noj hniav sab hauv ntawm cov qauv los ntawm teeb meem ntsev, alkalis thiab nplai. Boiler purge thev naus laus zis tso cai rau koj los daws cov haujlwm zoo li no
Lub zog thiab cov riam phom plasma. Kev cog lus riam phom loj hlob
Yog koj nug thawj tus neeg koj ntsib ntawm txoj kev tias riam phom plasma yog dab tsi, tsis yog txhua tus yuav teb. Txawm hais tias cov kiv cua ntawm cov yeeb yaj kiab science tej zaum yuav paub tias nws yog dab tsi thiab nws noj nrog dab tsi. Txawm li cas los xij, peb tuaj yeem hais tias nyob rau yav tom ntej tib neeg yuav los txog qhov tseeb tias cov riam phom zoo li no yuav raug siv los ntawm cov tub rog niaj hnub, tub rog thiab txawm tias aviation, txawm tias tam sim no qhov no nyuaj rau xav txog ntau yam
Magnetohydrodynamic generator: khoom siv, lub hauv paus ntsiab lus ntawm kev ua haujlwm thiab lub hom phiaj
Tsis yog txhua qhov chaw siv hluav taws xob hauv ntiaj teb tau kawm thiab siv tau zoo txog tam sim no. Txawm li cas los xij, tib neeg tseem tab tom txhim kho hauv cov kev taw qhia no thiab nrhiav kev xaiv tshiab. Ib tug ntawm lawv tau txais lub zog los ntawm ib tug electrolyte, uas yog nyob rau hauv ib tug magnetic teb. Lub voj voog ua haujlwm zoo thiab kev faib tawm tseem ceeb ntawm MHD generators. Daim ntawv teev cov yam ntxwv tseem ceeb. Kev xav thiab kev siv
Russian RD-180 foob pob hluav taws cav: specifications
Tsuas yog kua-propellant engine RD-180 yog qhov tsim nyog rau kev yuav khoom sib tw tshaj tawm los ntawm tsoomfwv Meskas. Raws li cov kws tshaj lij, cov yam ntxwv ntawm cov khoom no yog qhov zoo tagnrho rau cov tsheb thauj khoom hnyav thiab cov kev xav tau ntawm NASA
Polyurethane - yog dab tsi? Kev tsim cov polyurethane, cov khoom los ntawm nws
Hnub no, polyurethane yog cov khoom siv nrov heev. Dab tsi yog nws, koj yuav kawm hauv kab lus no
Shrapnel - yog dab tsi? shrapnel zoo li cas?
Cov kab lus hais txog dab tsi shrapnel yog, thaum siv hom phiaj no thiab nws txawv li cas ntawm lwm tus
Depot yog lub tsev ntawm dov Tshuag
Cov kab lus qhia meej tias lub khw yog dab tsi. Piv txwv ntawm dab tsi depots muaj nyob. Qee cov haujlwm uas tau ua nyob rau hauv lub depot tau teev tseg
"Babaevsky" confectionery txhawj xeeb (OJSC). Keeb kwm, cov khoom, cov neeg ua haujlwm xyuas
Kev txhawj xeeb ntawm Babaevsky confectionery yog ib lub tuam txhab qub tshaj plaws hauv tebchaws Russia. Nrog rau lwm lub tuam txhab confectionery, nws twb dhau los ua lub cim ntawm lub teb chaws, tsim cov khoom qab zib tshaj plaws raws li cov npe nrov, ntau tiam neeg nyiam "Babaevsky" chocolate rau lwm yam
Tshaj tawm ntawm phab ntsa daim ntawv qhia hnub: hom, xaiv cov ntsiab lus ntawm daim ntawv qhia hnub, nuances ntawm kev tsim thiab luam ntawv
Daim ntawv qhia hnub yog ib qho tseem ceeb ntawm txhua qhov chaw ua haujlwm. Thiab txawm tias muaj pes tsawg tus neeg siv khoom thiab cov neeg muag khoom pub dawb rau lawv, lawv tseem ua khawv koob los ntawm lub tuam txhab cov chaw ua haujlwm uas tsis koom nrog kev sib txuas lus nrog cov neeg cog lus. Cias muab, daim ntawv qhia hnub yog qhov tseem ceeb tshaj plaws ntawm cov ntaub ntawv tshaj tawm uas ib txwm mus nrog lub suab nrov
Kev sib txuas ntawm cov kav dej HDPE nrog cov yeeb nkab hlau: nta, cov lus pom zoo thiab kev tshuaj xyuas
Yog tias koj txiav txim siab txuas HDPE kav rau cov kav hlau, ces nws yog ib qho tseem ceeb kom paub koj tus kheej nrog cov thev naus laus zis yooj yim rau kev ua haujlwm. Thaum threading hlau HDPE kav me me mus txog 40 mm, nws yog qhov zoo tshaj plaws los siv fittings uas muaj ib tug xov rau ib tug hlau yeeb nkab
Refined qab zib: txoj hauv kev kom tau
Cov kab lus hais txog yuav ua li cas cov qab zib refined txawv ntawm cov suab thaj yooj yim, nws tau txais li cas thiab nws yuav tsum ua li cas
Traction dov Tshuag: kev faib tawm, hom, khoom siv thiab yam ntxwv
Tam sim no, kev sib txuas lus kev tsheb ciav hlau tau tsim muaj zog heev. Txhawm rau txav cov wagons loj, traction dov Tshuag yog siv. Txog niaj hnub no, cov tsheb ciav hlau zoo li no suav nrog locomotives, nrog rau ntau lub tsev dov khoom
Nthuav av nplaum: thermal conductivity, khoom thiab cov yam ntxwv
Cov av nplaum nthuav tawm yog tsim los ntawm cov slate thiab av nplaum thiab tsim nyog rau kev tsim vaj tsev nyob ib puag ncig thiab niaj hnub. Cov av nplaum nthuav dav kuj tseem siv rau kev kho kom zoo nkauj, thiab hauv tsev nws yog qhov tsim nyog los daws cov teeb meem ntawm cov nroj tsuag loj hlob
Kev txiav txim siab ntawm kev ua vaj tse: txoj hauv kev, khoom siv, GOST. Kev tswj thiab kev ntsuam xyuas ntawm cov pob zeb ua kom muaj zog
Thaum kuaj xyuas cov qauv hauv tsev, kev txiav txim siab ntawm lub zog ntawm cov pob zeb ua tiav los txiav txim siab lawv lub xeev nyob rau lub sijhawm tam sim no. Kev ua tau zoo tiag tiag tom qab pib ua haujlwm feem ntau tsis phim cov qauv tsim
Kev phom sij "Tus Saib Xyuas" MP-461: tshuaj xyuas, kev qhia tshwj xeeb thiab tshuaj xyuas
"Strazhnik MP 461" yog tib rab yaj phom raug mob uas tsim los ntawm cov chaw ntawm Izhevsk Mechanical Plant. Cov qauv tsim tshwj xeeb tso cai rau cov neeg nyiam phom kom paub txog cov qauv no sai sai. Ua tsaug rau nws lub zog, ergonomics thiab kev ntseeg siab, nws tau ua tiav muag rau ntau tshaj kaum xyoo
Dielectric mats: ntau yam, zoo, lub hom phiaj
Thaum muab kev pabcuam nyob, siv cov cuab yeej tiv thaiv ntxiv. Yuav tsum tau nruab cov mats roj hmab, coasters, hnab looj tes, tiv thaiv tshav kub
Ivankovskaya HPP: cog tsim, cov yam ntxwv tseem ceeb, kev lag luam tseem ceeb
Ivankovskaya chaw nres tsheb hluav taws xob hluav taws xob tau ua rau ntawm tus kwj dej. Moscow nyob rau hauv 1930s. Qhov chaw nres tsheb no muaj ob chav dej hluav taws xob nrog lub peev xwm ntawm 14.4 MW. Txog 119 kWh ntawm hluav taws xob tau tsim tawm ntawm qhov chaw no txhua xyoo. Qhov chaw nres tsheb no nyob 120 km sab qaum teb ntawm Moscow
Muaj roj boilers: ntau lawm, khoom siv, kev pab cuam lub neej
Cov kab lus no mob siab rau kev lag luam roj boilers. Cov yam ntxwv ntawm lawv tsim, hom, nuances ntawm kev saib xyuas, manufacturers, thiab lwm yam yog xam
Hypoeutectoid steel: qauv, khoom, ntau lawm thiab daim ntawv thov
Cov kab lus no mob siab rau cov hlau hypoeutecoid. Cov khoom thiab cov qauv ntawm cov khoom siv, cov yam ntxwv ntawm nws cov khoom siv, thiab lwm yam yog suav tias yog
Daim ntawv pov thawj ntawm vuam tshuab: hom, txheej txheem rau kev npaj thiab kev coj ua
Tam sim no, vuam yog ib hom kev ua haujlwm uas suav tias yog feem ntau. Txawm li cas los xij, tsis yog txhua tus paub tias txhawm rau muab cov kev pabcuam zoo li no, nws yog ib qho tsim nyog yuav tsum tau ua tiav daim ntawv pov thawj ntawm vuam tshuab
JSC "Bor iav cog" (BSZ): piav qhia, cov khoom lag luam thiab cov yam ntxwv ntau lawm
JSC "Bor iav cog" yog lub chaw tsim khoom ntawm nws pib iav hauv Russia. Txij li thaum xyoo 1997 nws tau los ntawm AGC Europe pawg tuam txhab. Lub tuam txhab kuj tsim: tais diav, iav, polished iav thiab lwm yam khoom
Coke cub roj teeb: khoom siv, lub hauv paus ntawm kev ua haujlwm, lub hom phiaj. Coke ntau lawm technology
Coke cub roj teeb yog qhov chaw ua haujlwm thiab tseem ceeb. Peb yuav tham txog nws txoj haujlwm thiab cov cuab yeej siv hauv kab lus
Tin thiab txhuas alloy: cov khoom thiab lub npe
Tam sim no, kev lag luam siv ntau yam khoom siv thiab alloys los ntawm lawv. Ib qho piv txwv ntawm kev siv cov hlau tsis tshua muaj melting yog tin, txhuas thiab alloys los ntawm cov khoom siv raw
Kev txhim kho tub rog tshiab hauv tebchaws Russia. Kev cog lus ua tub rog txhim kho hauv tebchaws Russia
Kev rov qab los ntawm cov nkoj thiab cov tub rog tsis yog tsuas yog muab cov khoom siv niaj hnub rau cov tub rog. Cov hom tshiab ntawm riam phom niaj hnub raug tsim nyob rau hauv Lavxias Federation. Lawv txoj kev loj hlob yav tom ntej tseem raug txiav txim siab. Xav txog kev txhim kho cov tub rog tshiab tshaj plaws hauv tebchaws Russia hauv qee thaj chaw
Gas pipeline rau Crimea. "Krasnodar Territory - Crimea" - lub ntsiab gas pipeline nrog ib tug ntev ntawm 400 km
Lub raj xa dej mus rau Crimea tau ua haujlwm rau lub Kaum Ob Hlis 2016. Nws txoj kev tsim kho tau tshwm sim ntawm qhov nrawm nrawm txhawm rau txhawm rau daws qhov teeb meem tseem ceeb ntawm Crimean roj tsheb thauj mus los: tsis muaj cov pa roj los ua kom tag nrho cov ceg av qab teb vim muaj kev noj ntau ntxiv
Testomes TMM-1M: specifications, duab thiab tshuaj xyuas. Industrial khob noom cookie mixing tshuab
Tsis yog ib qho hmoov nplej, nws qhov ntsuas siab tshaj "ci ncuav qab zib rau tsev neeg ob peb zaug hauv ib lub lis piam" tuaj yeem ua yam tsis muaj lub khob noom cookie. Tsis muaj tib neeg cov peev txheej tuaj yeem hloov lub tshuab ua haujlwm
Fumigation - nws yog dab tsi, nta, piav qhia thiab hom
Fumigation, yog dab tsi? Qhov no yog txheej txheem uas tsim los tshem tawm cov kab tsuag kab tsuag thiab lwm yam kab ya uas ua rau khoom noj khoom haus
Lub tshuab nqus tsev vacuum: lub hom phiaj, kev qhia tshwj xeeb
Cov lus no mob siab rau lub tshuab nqus tsev vacuum. Lub hom phiaj ntawm cov chav nyob, lawv cov yam ntxwv, cov yam ntxwv, thiab lwm yam yog suav tias yog
Kev sib txuas tus pin yog dab tsi?
Pin kev sib txuas yog feem ntau siv nyob rau hauv cov nodes ntawm ntau yam mechanisms rau torque kis tau tus mob. Lawv lub ntsiab kom zoo dua yog tias lawv tso cai rau koj nruab qhov chaw nrog cov neeg siab
Diesel rauj: hom, yam ntxwv thiab khoom siv
Tam sim no, kev tsim kho ntawm ntau qhov chaw yog nyob rau hauv tag nrho viav vias. Raws li cov khoom siv hauv tsev, muaj ntau yam ntawm qhov khoob yog siv, nrog rau cov cuab yeej ua haujlwm nrog lawv. Ib qho ntawm cov khoom siv no yog lub rauj diesel
Tus thawj coj drilling rau pawg: thev naus laus zis, qhov zoo thiab nta
Txoj kev drilling tso cai rau koj los txhim kho pawg hauv txoj haujlwm ntsug hauv thaj chaw uas muaj av tuab. Txoj kev no yog qhov tseem ceeb tshaj plaws nyob rau lub caij ntuj no, vim tias nws yooj yim rau cov txheej txheem ntawm kev tsav tsheb ib pawg thaum tso lub hauv paus
Eurodrova: tshuaj xyuas, nqi. Kev tsim khoom Eurowood
Qhov xwm txheej thoob ntiaj teb yog qhov zoo li txhua lub xeev uas tsis muaj nws lub zog muaj peev xwm raug yuam los ntawm cov neeg rho tawm thiab tsim tawm. Lub siab xav txuag ntawm lawv ua rau peb nrhiav cov khoom tshiab, pheej yig dua rau cov tshuab cua sov. Pellet thiab eurobriquettes yog nrov niaj hnub no
Facing thaiv: hom, kev faib tawm, yam ntxwv, xaiv cov lus qhia, qhov zoo thiab qhov tsis zoo ntawm daim ntawv thov
Hnub no, muaj ntau yam khoom sib txawv rau kev tsim kho. Facing thaiv yog ib qho ntawm lawv. Tsis ntev los no nws tau siv ntau zaus vim nws cov yam ntxwv tshwj xeeb. Nws yog tsim nyog sau cia tias cov ntaub ntawv no tso cai rau koj kom txuag tau nyiaj ntau ntawm cov khoom siv
Pallet ntau lawm ua lag luam
Kev ntim khoom yog qhov yooj yim heev. Tsis tas li ntawd, lub koom haum ntawm tag nrho cov txheej txheem thev naus laus zis yuav tsis xav tau kev nqis peev loj los ntawm tus neeg ua lag luam
AVVG-cable: specifications thiab tsim
AVVG-cable yog ib feem uas ua haujlwm rau kev faib thiab xa hluav taws xob tam sim no hauv kev teeb tsa nyob ruaj khov rau qhov ntsuas hloov hluav taws xob. Feem ntau, qhov concentration ntawm hluav taws xob nyob rau hauv nws nyob ntawm 650 mus rau 1000 V. Nyob rau hauv cov ntaub ntawv no, qhov zaus ntawm cov khoom tam sim no tuaj yeem ncav cuag 50 Hz lossis ntau dua. Cov hlau no siv nyob qhov twg thiab cov yam ntxwv ntawm AVVG cable yog dab tsi?
Industrial sewing tshuab: txheej txheem cej luam, piav qhia, chav kawm, specifications thiab xyuas
Kev lag luam tshuab xaws yog tsim los ntawm ntau hom thiab muaj lawv tus kheej chav kawm. Yuav kom nkag siab txog cov qauv, koj yuav tsum xav txog cov tuam txhab tseem ceeb thiab nrhiav kev tshuaj xyuas cov neeg siv khoom
Lub raj mis yas rov ua dua tshiab - lub neej thib ob ntawm polyethylene terephthalate (PET)
Kev siv cov khoom siv rov ua dua tau nce siab txhua xyoo thoob ntiaj teb. Qhov yuav tsum tau ua ua ntej rau qhov no muaj ob qho kev lag luam thiab ib puag ncig. Kev rov ua dua tshiab ntawm lub raj mis yas yog ib qho ntawm cov lus qhia kom tau txais cov khoom siv polymer thib ob
Lub tshuab rhaub dej muaj: piav qhia thiab tshuaj xyuas
Boilers thiab cua sov installation feem ntau yog siv qhov twg tsis muaj txoj hauv kev los xyuas kom cov dej kub ruaj khov. Qhov feem ntau ntawm cov cuab yeej siv no yog kev lag luam ntiag tug nyob rau hauv lub caij ntuj sov cottages thiab nyob rau hauv cov infrastructure ntawm cov tsev neeg suburban
Pump "Me nyuam": specifications, nta thiab xyuas
Lub twj tso kua mis submersible zoo heev pab txhawb cov txheej txheem dej hauv lub tebchaws, tso cai rau koj muab dej rau hauv lub tebchaws thiab muaj ntau lub hom phiaj ua haujlwm. Nyob rau hauv lub moj khaum ntawm tsab xov xwm no, peb yuav xav txog cov twj "Kid", lawv hom, kev ua haujlwm zoo, lub hauv paus ntsiab lus ntawm kev ua haujlwm thiab kev ua haujlwm tsis zoo uas tshwm sim thaum lub sijhawm ua haujlwm
Qhov chaw ntawm lub zog hluav taws xob: piav qhia, hom thiab nta
Cov khoom siv hluav taws xob sib txawv ntawm cov qauv tsim thiab cov yam ntxwv tuaj yeem siv los txhawb cov neeg siv khoom
Nurek HPP - yav dhau los thiab yav tom ntej kev cia siab
Nurek HPP yog ib qho ntawm cov chaw tsim hluav taws xob zoo tshaj plaws hauv ntiaj teb. Ua nyob rau hauv ib lub sij hawm luv luv, nws hloov lub ntsej muag thiab kev lag luam ntawm Tajikistan. Niaj hnub no, ua tsaug rau lub reconstruction, lub chaw nres tsheb muaj ib tug rebirth
Class B pov tseg: khaws cia thiab pov tseg
Nyob rau hauv cov haujlwm ntawm cov tsev kho mob thiab lwm lub tsev kho mob uas zoo sib xws, muaj ntau cov pov tseg, cov khoom siv thiab cov khoom siv tau tshwm sim. Lawv muaj peev xwm ua rau muaj kev phom sij rau tib neeg kev noj qab haus huv thaum muaj kev sib cuag, yog li qhov teeb meem ntawm kev pov tseg thiab pov tseg yog mob hnyav heev
Tu-214 yog thawj lub dav hlau Lavxias teb sab uas ua tau raws li cov kev cai thoob ntiaj teb niaj hnub no
Txoj kev sib tw ntawm Tu-214 thaum muaj kev phom sij txaus ntshai thiab txiav txiav tau ua tiav, uas qhia tias lub dav hlau zam txim rau ntau qhov kev ua yuam kev
Polyester resin thiab epoxy resin: qhov sib txawv, yam ntxwv thiab tshuaj xyuas
Epoxy thiab polyester resins, qhov sib txawv ntawm qhov yuav raug txiav txim siab hauv kab lus no, yog nyob rau hauv chav kawm ntawm thermosetting. Qhov no txhais tau hais tias tom qab cov txheej txheem solidification, lawv tsis tuaj yeem rov qab mus rau lub xeev cov kua. Ob qho tib si muaj cov yam ntxwv sib txawv, uas txiav txim siab txog lawv qhov kev thov
Crucible induction rauv: lub hauv paus ntsiab lus ntawm kev ua haujlwm, kos duab thiab tshuaj xyuas
Induction cua sov tuaj yeem siv los ua haujlwm nrog txhua yam khoom siv: hlau, slag, roj, thiab lwm yam. Lub ntsiab kom zoo dua ntawm nws siv yog tsis sib cuag thaum tshav kub kub hloov. Tsis tas li ntawd, induction cua sov tso cai rau koj kom ua tiav yuav luag txhua qhov cua sov - nws tag nrho yog nyob ntawm lub zog ntawm lub tshuab hluav taws xob uas pub lub cub tawg
Industry Canada. Cov yam ntxwv tseem ceeb ntawm qhov chaw ntawm Canada kev lag luam
Canada yog ib lub tebchaws tsim kho tshaj plaws hauv ntiaj teb. Nrog cov pejxeem tsawg, nws txoj kev lag luam yog piv rau cov xeev loj tshaj plaws - Brazil, Russia
Polygon yog: tswvyim, hom, siv
Kab lus no hais txog lo lus "polygon", qhia txog keeb kwm ntawm lub npe. Kev faib tawm ntawm polygons, cov yam ntxwv ntawm ntau hom tau muab. Cov ntsiab lus ntawm qhov chaw sim nuclear thiab qhov chaw pov tseg rau cov khib nyiab hauv nroog tau piav qhia
Peb Gorges: qhov chaw nres tsheb hluav taws xob loj tshaj plaws hauv ntiaj teb
Peb Gorges tsis yog qhov chaw nres tsheb hluav taws xob loj tshaj plaws hauv ntiaj teb, tab sis kuj yog lub teb chaws Suav thaj chaw uas nyiam ntau tus neeg tuaj ncig thoob ntiaj teb. Tsab xov xwm qhia txog qhov loj tshaj plaws hydraulic qauv, nyob rau ntawm lub qhov ncauj ntawm tus dej Yangtze, nruab nrab ntawm Tuam Tshoj lub zos ntawm Yichang thiab Chongqing
Cov hlau hnyav tshaj plaws - nws zoo li cas?
Nws yog qhov nthuav kom paub tias dab tsi yog cov hlau nyuaj tshaj plaws. Cov lus piav qhia ntxaws txog nws cov khoom, cov txheej txheem rho tawm thiab thaj chaw ntawm kev siv tswv yim
Corvette "Perfect" (duab). Qhov qis ntawm lub corvette mus rau hauv dej
Kev tsim kho ntawm corvette "Perfect" tau siv sijhawm ntau xyoo, yog li nws qhov kev tshaj tawm tau dhau los ua ib qho xwm txheej loj tshaj plaws hauv keeb kwm niaj hnub ntawm Lavxias Navy. Koj tuaj yeem nyeem txog nws cov yam ntxwv thiab riam phom hauv kab lus no
Nqus membrane xovxwm. Cov khoom siv rau kev tsim cov rooj tog zaum
Nqus-membrane xovxwm yog cov cuab yeej tsim los siv PVC lossis veneer zoo nkauj zaj duab xis rau lub façade ntawm cov txee thiab teeb. Cov khoom siv ntawm hom no yog tus cwj pwm los ntawm qhov tsis yooj yim tsim thiab siv tau yooj yim
Kazan rab phom Hoobkas: keeb kwm ntawm kev tsim
FKP "Kazan Gunpowder Plant" yog lub tuam txhab tiv thaiv kev lag luam loj tshwj xeeb hauv kev tsim cov hmoov phom, nqi, pyrotechnics thiab lwm yam khoom. Tshaj li 228-xyoo keeb kwm, ntau lab tons ntawm cov khoom tawg rau ntau lub hom phiaj tau raug rho tawm haujlwm ntawm no
Hlau txiav tshuab. Plasma hlau txiav tshuab
Zaj lus no mob siab rau lub cuab yeej txiav hlau. Kev siv tshuab ntawm plasma txiav, nrog rau cov cuab yeej thiab cov yam ntxwv ntawm cov cuab yeej raug txiav txim siab
Lomonosov Porcelain Factory: keeb kwm, cov khoom thiab cov cim. Porcelain figurines ntawm lub sij hawm Soviet
Dab tsi yog keeb kwm ntawm Lomonosov Porcelain Factory? Nws tsim khoom dab tsi niaj hnub no? Koj yuav kawm txog qhov no los ntawm peb tsab xov xwm
Bearings: qauv, qhov ntau thiab tsawg. Standard bearing qhov ntau thiab tsawg
Kev lag luam niaj hnub tsim cov kabmob ntawm cov qauv sib txawv. Nyob rau tib lub sijhawm, GOST cov qauv tuaj yeem tswj hwm lawv txoj kab uas hla, dav, nrog rau kev tso cai sib txawv. Feem ntau, thaum sib sau ua ke ntau hom units, dov thiab cov bearings yog siv
Teeb DRL 250 - yam ntxwv, nta, txoj cai ntawm kev ua haujlwm thiab tshuaj xyuas
Cov kab lus yuav kawm DRL 250 teeb, cov yam ntxwv uas tam sim no pom zoo siv rau ntau thaj chaw ntawm tib neeg lub neej
Polyester yog cov khoom siv hluavtaws nrog cov khoom tshwj xeeb
Tam sim no, polyester yog dav siv rau khaub ncaws, ntaub pua chaw thiab ntaub. Tab sis peb paub dab tsi txog cov khoom ntawm cov khoom no?
Cov thawv tiv thaiv: hom, nta, yam ntxwv
Tuam txhab loj lossis cov neeg muaj ntaub ntawv tseem ceeb nyiam khaws cia rau hauv qhov chaw nyab xeeb. Rau cov hom phiaj no, cov thawv tiv thaiv tau tsim
Artillery mount "Nona". Self-propelled artillery installation ntawm Russia
Txawm tias nyob rau xyoo tas los ntawm kev muaj nyob ntawm USSR, nyob rau hauv cov xwm txheej ntawm qhov pib ntawm kev poob qis ntawm cov tub rog, cov tub rog hauv dav hlau yog ib qho tseem ceeb uas tau siv rau hauv txhua qhov kev tsis sib haum xeeb hauv cheeb tsam ntawm thaj chaw qub. Soviet Union
"Vostok" - tso lub tsheb. Thawj foob pob hluav taws "Vostok"
Nrog rau kev tsim riam phom atomic, cov lus nug tau tshwm sim ntawm txoj hauv kev ceev tshaj plaws los xa lawv mus rau qhov deb heev. Lub Soviet Union thiab Tebchaws Meskas tau tso siab rau kev tsim cov foob pob hluav taws xob nuclear uas muaj peev xwm tawm tsam tus yeeb ncuab nyob rau sab nraud ntawm lub ntiaj teb hauv ob peb feeb
Dimensions ntawm ntoo railway sleepers. Reinforced qhob pw tsaug zog: qhov ntev
Kev tsim cov tsheb ciav hlau pw tsaug zog hauv Lavxias Federation yog tswj hwm los ntawm lub xeev nruj. Qhov no siv tau rau ob qho tib si ntoo thiab pob zeb ua vaj tse. Dab tsi yog qhov tshwj xeeb ntawm cov qauv tswj qhov ntev ntawm ob hom pw tsaug zog?
Bas alt thooj voos kheej kheej: piav qhia, kev tsim khoom, daim ntawv thov, duab
Bas alt thooj voos kheej kheej yog siv rau thermal rwb thaiv tsev ntawm cov kav dej hauv tsev thiab hauv tsev. Txij li nws yog raws li cov khoom siv ib puag ncig, nws tuaj yeem siv tau rau txhua hom kev lag luam, suav nrog zaub mov. Qhov chaw uas cov rwb thaiv tsev yuav siv tau tuaj yeem muaj lub hom phiaj
Edging tshuab: txoj cai ntawm kev ua haujlwm, hom, nqi
Cov lus no mob siab rau cov tshuab edging. Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm cov khoom siv, ntau yam, nrog rau kev ua haujlwm ntxiv thiab tus nqi raug txiav txim siab
Power of Siberia gas pipeline: tswvyim
Lub Hwj Chim ntawm Siberia roj pipeline yog ib qhov haujlwm loj tshaj plaws hauv tebchaws Russia. Nws tshwm sim li cas? Nws lub tswvyim yog dab tsi?
HPP: lub hauv paus ntawm kev ua haujlwm, lub tswv yim, khoom siv, lub zog
Yuav luag txhua tus xav txog lub hom phiaj ntawm cov chaw tsim hluav taws xob hluav taws xob, tab sis tsuas yog ob peb tus neeg nkag siab txog lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm cov chaw tsim hluav taws xob hluav taws xob. Lub ntsiab tsis meej rau tib neeg yog li cas lub pas dej loj loj no tsim hluav taws xob tsis muaj roj. Wb tham txog qhov no
Snowplow tsheb ciav hlau: specifications, hom thiab daim ntawv thov nta
Snowplow tsheb ciav hlau thiab lawv keeb kwm. Snowplow tsheb ciav hlau ntawm PSS thiab SM qauv. Kev sib xyaw ntawm cov tsheb ciav hlau snowplow, lawv cov khoom siv thiab cov khoom siv. Technical yam ntxwv ntawm tsheb ciav hlau-snowplows. Kev khiav hauj lwm hom ntawm snowplows tsheb ciav hlau. Kev siv cov tsheb ciav hlau daus daus thaum lub caij ntuj sov
Magnesium iav ntawv: cov khoom siv tshuaj xyuas
Tsis ntev los no, ntau tus uas tab tom npaj tsim kho lossis kho dua tshiab, tig lawv lub qhov muag mus rau daim iav-magnesium. Kev tshuaj xyuas ntawm cov kws tshaj lij qhia tias nws yog cov khoom siv hauv tsev zoo heev uas yuav pab tsim cov qauv qub ntawm koj tus kheej
Xim qhov tsis pom kev ntawm welds: nta thiab piav qhia
Cov kab lus yog mob siab rau xim qhov tsis pom kev ntawm welds. Cov yam ntxwv ntawm cov txheej txheem, nws cov lus piav qhia, cov txheej txheem thev naus laus zis, thiab lwm yam
Milling machining center: hom, piav qhia thiab lub hom phiaj
Hnub no, lub chaw milling machining yog lub tshuab ua haujlwm ntau nrog cov lej software. Lub ntsiab kom zoo dua yog lub peev xwm mus nqa tawm complex machining ntawm peb-dimensional qhov chaw. Rau lub hom phiaj no, lub chaw yog nruab nrog ntau yam khoom siv
Ua Npuas Ncauj: cov cuab yeej tsim khoom, khoom siv, cov khoom tsim nyog
Kev tsim kho thev naus laus zis los ntawm cov cuab yeej ua vaj tse tam sim no tau ntsib teeb meem cuam tshuam nrog kev txhim kho kev vam meej ntawm lwm txoj hauv kev ntawm kev tsim cov khoom thauj khoom. Masonry cov ntaub ntawv nyob hauv ib qho chaw tshwj xeeb hauv cheeb tsam ntawm kev teeb tsa ua haujlwm, tso cai rau kev tsim cov khoom pheej yig nrog cov khoom zoo insulating. Qhov ze tshaj plaws rau ntu nyiaj txiag yog cov tshuab ua npuas ncauj thaiv, uas tuaj yeem txhim kho txawm nyob hauv ib puag ncig hauv tsev
Kev lag luam teeb: hom, yam ntxwv, lub hom phiaj
Cov kab lus no mob siab rau kev lag luam teeb. Cov yam ntxwv, ntau yam, nuances ntawm installation thiab lub hom phiaj ntawm cov khoom siv teeb pom kev zoo yog suav tias yog
Txoj hauv kev zoo los tiv thaiv cov kav dej los ntawm kev xeb
Kev tiv thaiv cov kav xa hluav taws xob los ntawm kev xeb: txoj hauv kev zoo, nta, tshwj xeeb sib xyaw, duab. Active thiab passive tiv thaiv cov roj pipelines los ntawm corrosion: hom, txheej txheem txheej txheem, lub sij hawm ntawm kev txiav txim. Yuav ua li cas tiv thaiv underground gas pipelines los ntawm corrosion?
Yuav ua li cas lub submarine ua haujlwm: piav qhia, yam ntxwv thiab lub hauv paus ntsiab lus ntawm kev ua haujlwm
Submarines yog ib chav ntawm cov nkoj uas tuaj yeem txav mus los thiab ua lwm yam kev ua tiav hauv dej thiab ntawm nws qhov chaw. Cov nkoj zoo li no muaj peev xwm nqa riam phom, thiab tuaj yeem hloov kho rau ntau yam haujlwm tshwj xeeb. Xav txog seb lub submarine tau npaj li cas thiab nws ua haujlwm li cas
Passivation yog Cov txheej txheem ntawm passivation ntawm hlau txhais tau tias tsim cov yeeb yaj kiab nyias ntawm qhov chaw txhawm rau tiv thaiv corrosion
Txoj kev niaj hnub ntawm kev tiv thaiv cov hlau los ntawm corrosion yog tsawg thiab tsawg dua yuav ua tau raws li cov kev cai uas siv rau kev ua tau zoo ntawm cov qauv thiab cov khoom tseem ceeb. Beams nyob rau hauv lub tsev thav duab, cov kav dej thiab cov hlau claddings tsis tuaj yeem ua yam tsis muaj kev tiv thaiv xeb ib leeg thaum nws los txog rau kev siv cov khoom mus ntev. Ib txoj hauv kev zoo dua rau kev tiv thaiv corrosion yog txoj kev electrochemical thiab tshwj xeeb passivation
Plating is Technology Features and Benefits
Cov kev ua haujlwm ntawm cov ntaub ntawv hauv ib puag ncig hnyav inevitably yuam cov neeg siv xav txog kev tiv thaiv tshwj xeeb ntawm lub hom phiaj cov khoom thiab cov qauv. Cov no tuaj yeem yog kev tsim kho, kev lag luam, nrog rau kev siv hauv tsev thiab lwm qhov chaw uas yuav tsum tau muaj kev tiv thaiv kev tawm tsam. Ib txoj hauv kev zoo tshaj los daws qhov teeb meem no yog cladding. Qhov no yog ib txoj hauv kev ntawm txheej txheej sab nraud ntawm qhov chaw thiab cov qauv
Khoom thiab muaj pes tsawg leeg ntawm silicate cib
Muab qhov nrawm ntawm kev tsim cov tsev tshiab, nrog rau qhov xav tau los tsim cov khoom vaj khoom tsev tshiab, nws yuav tsum tau muab sau tseg tias cov xuab zeb-lime cib feem ntau yog siv los ua cov khoom siv rau phab ntsa. Qhov no yog cov khoom siv tau thiab txhim khu kev qha. Peb yuav xav txog cov yam ntxwv, cov khoom thiab muaj pes tsawg leeg ntawm silicate cib nyob rau hauv peb tsab xov xwm niaj hnub no
Nqus txoj kev tshuab: hom, chaw tsim tshuaj paus, specifications, ua hauj lwm hauv paus ntsiab lus thiab daim ntawv thov
Hnub no, tib neeg nquag siv cov thawv yas. Rau kev tsim cov khoom zoo li no nrog cov duab sib txawv thiab nyuaj, lub tshuab nqus tsev yog siv. Cov khoom tsim los ntawm cov tshuab zoo li no tau nquag siv tsis yog hauv lub neej txhua hnub, tab sis kuj yog khoom noj khoom haus, kev lag luam teeb, thiab kev lag luam tsheb
Kev khib nyiab yog Lub tswv yim, kev faib tawm, cov cai rau kev sau thiab pov tseg
Lub hav zoov ntawm cov khib nyiab lom neeg tsis muaj kev cuam tshuam nrog kev muaj lub neej organic. Tau ntau lab xyoo, lub ntiaj teb nws tus kheej tswj hwm lawv cov pov tseg thiab tsim lawv rau hauv lub ntiaj teb ecosystem. Niaj hnub no, qhov teeb meem ntawm kev sau thiab pov tseg cov khib nyiab lom neeg muaj feem cuam tshuam rau vim li cas qhov xwm txheej tsis tuaj yeem tiv nrog cov nyiaj uas tus neeg tsim txhua hnub
Kev faib tawm ntawm cov khoom siv roj av: hom, chav kawm phom sij, yam ntxwv
Raws li lub hauv paus thiab cov hauv paus ntsiab lus nws yog kev cai los faib cov roj thiab cov khoom siv roj. Kev tshuaj xyuas cov roj tsheb yog cov khoom siv tseem ceeb los ntawm hydrocarbons. Lub xeev cov qauv rau kev faib cov khoom siv roj av. Subdivision ntawm roj raws li cov chav kawm flammability thiab poob. Tankers thiab warehouses rau roj thiab roj cov khoom. Cov khoom seem thiab roj av lubricating roj. Kev faib tawm ntawm cov khoom siv roj av tshwj xeeb
Dosimetric ntaus ntawv DP-5V: piav qhia, kos duab thiab yam ntxwv
Cov khoom siv dosimetric DP-5V tau tsim los siv los ntawm cov tub rog. Nws yog npaj rau siv nyob rau hauv confrontation tej yam kev mob, thaum nuclear riam phom yog siv los ua reconnaissance ntawm cheeb tsam rau hluav taws xob paug
Hydraulic lub cev muaj zog: khoom siv, lub hom phiaj, lub hauv paus ntsiab lus ntawm kev ua haujlwm
Hydraulic mechanisms tau siv los ntawm noob neej txij thaum ub los daws teeb meem ntau yam kev lag luam thiab engineering. Kev siv lub zog ntawm cov dej ntws thiab lub siab yog qhov tseem ceeb niaj hnub no. Cov cuab yeej txheem ntawm hydraulic lub cev yog xam rau kev txhais lus ntawm lub zog hloov dua siab tshiab rau hauv lub zog ua haujlwm ntawm kev sib txuas ua haujlwm. Lub tswv yim ntawm lub koom haum ntawm cov txheej txheem no thiab cov txheej txheem thiab cov qauv nuances ntawm kev ua tiav ntawm chav tsev muaj ntau qhov sib txawv ntawm cov hluav taws xob niaj hnub
Kev lag luam ntawm thaj av Arkhangelsk: cov nroj tsuag, chaw tsim khoom, sib txuas
Cov kab lus piav qhia txog cov yam ntxwv ntawm kev lag luam ntawm thaj av Arkhangelsk, vim nws qhov chaw nyob thiab keeb kwm kev loj hlob. Daim ntawv teev cov kev lag luam tsim nyob rau hauv cheeb tsam yog muab, cov tuam txhab tseem ceeb thiab lawv qhov tseem ceeb rau ob qho tib si hauv cheeb tsam thiab kev lag luam Lavxias hu ua
Biplane aircraft: tsim nta, qhov zoo thiab qhov tsis zoo
Lub teeb yuag, maneuverable, nyob rau hauv ntau yam kev hwm zoo aircraft - biplanes. Lawv nquag siv rau niaj hnub no, thiab lawv txoj kev loj hlob tau pib nyob rau hauv lub xyoo pua puv 19. Txog keeb kwm ntawm kev tsim biplanes thiab lawv lub peev xwm - peb cov khoom
Suction systems rau woodworking
Intensive kev loj hlob ntawm kev lag luam pab txhawb kev hloov pauv ntawm cov neeg ua haujlwm ntawm kev lag luam. Hais txog kev tsim khoom lag luam, peb tuaj yeem tham txog cov teeb meem ntawm huab cua purification, uas yog qias neeg los ntawm cov khoom me me ntawm cov khoom pov tseg. Cov dej num ntawm kev cia siab rau kev ua haujlwm ntoo yog qhov mob tshwj xeeb, vim nws tsis tuaj yeem yog hais txog shavings thiab sawdust
Primer rau hlau GF-021: noj ib 1m2, lub hom phiaj, specifications
Nws paub tias txhawm rau ua kom muaj zog ntau dua rau cov xim txheej, cov kws tsim kho tshwj xeeb siv cov primer. Kev lag luam niaj hnub ntawm cov khoom siv hauv tsev yuav raug sawv cev los ntawm kev xaiv dav ntawm cov khoom ntawm cov lus nug, nyob rau hauv tag nrho cov naj npawb ntawm cov uas muaj ib tug nyias muaj nyias ib hom phiaj rau txheej txheej hlau (GF-021). Cia peb xav txog ntxiv nws cov yam ntxwv tseem ceeb, nrog rau qee yam ntxwv
Tram ntaus ntawv: tsim thiab cov khoom tseem ceeb. Tram tswj
Keeb kwm ntawm kev tshwm sim thiab kev hloov pauv ntawm cov tsheb ciav hlau ua kev thauj mus los. Yuav ua li cas yog lub hwj chim mov ntawm niaj hnub trams. Cov lus piav qhia ntawm cov cuab yeej ntawm lub cev muaj zog traction thiab qhov system rau nws txoj kev tswj hwm. Muaj pes tsawg lub log niaj hnub trams tuaj yeem muaj, nws nyob ntawm dab tsi. Kev piav qhia ntawm cov qauv dav dav thiab cov ntsiab lus ntawm tram. Yuav ua li cas tsav tsheb hom no. Kev siv cov khoom siv pneumatic
Obukhovskaya kuv: piav qhia, tso zis, duab
Ntau tshaj 100 xyoo dhau los, cov lus dab neeg ntawm Lavxias teb sab geologists, Obukhov, pom nyob ze ntawm Zverevo chaw nres tsheb ib qho kev tawm mus rau lub ntiaj teb nto ntawm ib tug haib thiab tshwj xeeb coal seam - k2. Thiab plaub caug xyoo dhau los, thaum kawg ntawm lub Kaum Ob Hlis 1978, Obukhovskaya mine tau tsim thiab muab tso rau hauv qhov chaw no, lees paub tias yog qhov loj tshaj plaws mine nyob rau sab hnub tuaj Europe
Gorkovskaya HPP hauv Russia
Gorkovskaya chaw nres tsheb hluav taws xob hluav taws xob yog ib qho ntawm thawj qhov chaw siv hluav taws xob hluav taws xob tsim los tom qab ua tsov rog. Qhov project grandiose tau ua tiav los ntawm yuav luag 15 txhiab tus neeg uas tuaj rau qhov chaw tsim kho los ntawm thoob plaws lub tebchaws USSR. Lub hydroelectric complex tau dhau los ua qhov chaw sim rau kev tsim kho thev naus laus zis thiab tau daws ntau yam teeb meem thoob ntiaj teb hauv cheeb tsam
Kev tsim cov polyurethane ua npuas ncauj: tshuab, raw khoom, khoom siv
Mounting ua npuas ncauj los ntawm ib txwm txhais tau tias ntawm kev sib khi lub qhov rais qhib tau ntev dhau mus rau hauv cov xwm txheej ntawm cov khoom siv hauv tsev tag nrho, uas tau siv dav hauv ntau hom kev ua haujlwm. Ntau yam kev siv ntawm cov khoom no kuj txiav txim siab qhov xav tau ntawm kev sib txawv ntawm kev siv thev naus laus zis ntawm nws cov khoom siv. Txawm li cas los xij, qhov sib txawv ntawm cov txheej txheem tsim ntawm polyurethane ua npuas ncauj yog ntau yam ntawm cov tshuaj pleev ib ce, tsis muaj kev cuam tshuam rau cov txheej txheem thev naus laus zis
Plain bearings: tsim, hom, ntau lawm, hom phiaj, qhov zoo thiab qhov tsis zoo
Zawv zawg bearings yog siv rau hauv cov tshuab hluav taws xob thiab cov tshuab hluav taws xob sab hauv. Cov no yog cov khoom uas muaj peev xwm kis tau tus mob torque, kom ntseeg tau qhov kev ua haujlwm ntawm cov tshuab. Cov kabmob muaj qhov tshwj xeeb tsim. Qhov no muab cov txheej txheem kev ua haujlwm thiab kev ua haujlwm ntawm ib feem. Cov qauv tsim ntawm cov kabmob dawb, lawv ntau yam, qhov zoo thiab qhov tsis zoo yuav tau tham hauv tsab xov xwm
"Belaya Dolina", Engels: chaw nyob, khoom, zoo, tawm tswv yim los ntawm cov neeg ua haujlwm thiab cov neeg siv khoom
"Belaya Dolina", Engels: chaw nyob, khoom, zoo, tawm tswv yim los ntawm cov neeg ua haujlwm thiab cov neeg siv khoom. Cov ntaub ntawv hais txog lub tuam txhab: chaw nyob, keeb kwm thiab ntau lawm. Cov khoom lag luam. Muaj ntau hom hnyuv ntxwm: boiled, smoked thiab nqaij npua. Sausages, sausages thiab sausages. Cov khoom noj mis nyuj: ntau yam thiab piav qhia. Kev tshuaj xyuas cov neeg ua haujlwm yav dhau los txog lub tuam txhab
PCB manufacturing method: ntau lawm technology
Hauv kev ntsuas thiab cov khoom siv hluav taws xob feem ntau, cov ntawv luam tawm hluav taws xob ua lub luag haujlwm tseem ceeb ua cov khoom siv hluav taws xob sib txuas. Qhov zoo ntawm cov cuab yeej thiab nws cov kev ua tau zoo yog nyob ntawm qhov ua haujlwm no. Cov txheej txheem niaj hnub ntawm kev tsim cov ntawv luam tawm Circuit Board yog coj los ntawm qhov muaj peev xwm txhim khu kev qha kev koom ua ke ntawm cov khoom hauv paus nrog lub siab ntim ntom ntom, uas ua rau kev ua tau zoo ntawm cov khoom tsim
AN 225 - "Valuev" ntawm cov dav hlau
AN 225 lub dav hlau tau tshwm sim ua tsaug rau… foob pob hluav taws. Qhov tseeb yog tias qhov pib ntawm kev siv cov tsheb thauj khoom hnyav ua rau muaj kev xav tau los tsim lub dav hlau uas tuaj yeem thauj cov khoom loj thiab hnyav heev nyob rau qhov ntev. Yog li, tsuas yog 3.5 xyoo, AN 225 tau tsim, uas tus lej "225" txhais tau tias muaj pes tsawg tons uas lub dav hlau no tuaj yeem nqa tau. Niaj hnub no nws yog lub dav hlau loj tshaj plaws nyob rau hauv lub ntiaj teb nrog lub siab tshaj plaws payload
An-148 yog "tus neeg ua haujlwm" tshiab ntawm cov pa nruab nrab
Lub Fy-148 lub dav hlau tau maj mam nyob hauv lub niche hauv cov neeg caij tsheb thauj mus los, uas cov lus dab neeg An-24 yog tus tswv rau yuav luag plaub xyoo lawm, uas yog, luv luv ya davhlau nruab nrab ntawm lub nroog ntawm lub tebchaws thiab lub davhlau hauv cheeb tsam
Hom, nta ntawm kev teeb tsa thiab kev siv cov khoom siv rau chromium plating
Cov kab lus tau mob siab rau cov khoom siv chromium plating. Cov yam ntxwv ntawm cov khoom siv no, cov txheej txheem chrome plating, thiab lwm yam
CNC drilling tshuab rau rooj tog ntau lawm
Yog tias koj txiav txim siab pib tsim cov rooj tog niaj hnub, koj yuav tsum paub tias nyob rau hauv cov txheej txheem ntawm kev tsim khoom nws yog qhov nyuaj heev uas tsis muaj lub tshuab drilling thiab vuam. Nrog nws, koj tuaj yeem laum tag nrho cov kev suav qhov tseeb txhawm rau txhawm rau txuas cov ntsiab lus ua ke. Txwv tsis pub, nws yuav siv sij hawm ntev heev
AquaShield antiscale lim: tus tswv tshuaj xyuas, cov lus qhia kev teeb tsa
Lub hauv paus ntsiab lus ntawm kev ua haujlwm, cov yam ntxwv ntawm kev ua haujlwm thiab kev teeb tsa ntawm cov ntxaij lim dej electromagnetic los ntawm nplai "AquaShield". Vim li cas lawv zoo dua li lwm cov lim dej thiab vim li cas AquaShield tau txais kev ntseeg siab los ntawm cov neeg siv khoom
Electric coil: piav qhia thiab daim ntawv thov
Ntau yam khoom siv hluav taws xob tau siv ntev thiab yuav luag txhua qhov chaw. Txawm li cas los xij, ob peb tus neeg nkag siab lawv cov qauv thiab cov ntsiab lus siv rau lawv txoj haujlwm. Ib qho ntawm cov ntsiab lus me me, tab sis tseem ceeb heev, yog lub tshuab hluav taws xob