Xov xwm kev lag luam

Lub ntiaj teb tab tom hloov mus rau lub neej yav tom ntej uas muaj kev ruaj ntseg uas peb ua qhov tseem ceeb ntawm kev siv lub zog tauj dua tshiab. Lub hnub ci fais fab yog ib lub zog huv thiab rov ua dua tshiab uas tuaj yeem siv los siv rau ntau yam khoom siv thiab khoom siv. Ib qho khoom siv tshiab no yog lub hnub ci-p ...

Cov kab nyiaj siv ua haujlwm feem ntau yog xa mus rau cov kab dav dav qhib, uas tau teeb tsa rau hauv av. Nws yog cov kab sib kis uas siv cov insulators los txhim kho cov xaim xaim ntawm cov ncej thiab cov yees nyob rau hauv av kom xa hluav taws xob hluav taws xob. Lub erection thiab tswj ...

Strain clamp yog ib qho cuab yeej siv los ntsuas cov khoom siv, uas yog siv dav hauv kev ntsuas kev ua haujlwm, kev saib xyuas cov qauv, kev tshawb fawb cov khoom thiab lwm yam haujlwm. Strain clamps xam cov strain los ntawm kev ntsuas qhov me me ntawm deformation ib yam khoom ...

Lub hnub ci them vaj huam sib luag yog lub charger uas tsim hluav taws xob ntsuab rau cov khoom siv txawb thiab lwm yam los ntawm kev tsim hluav taws xob los ntawm lub hnub. Hauv tsab xov xwm no peb yuav qhia koj txog lub hnub ci them hluav taws xob hauv peb lub khw thiab muab cov ntsiab lus ntawm kev siv nws thiab th...

Lub pre-stranded hlau yog siv rau kev sib txuas fittings ntawm overhead hwj chim conductor thiab lub hwj chim overhead cable davhlau ya nyob twg, ncua kev kawm ntawv thiab sib koom ua ke. Cov xaim xaim ua ntej tau tshwm sim thawj zaug hauv Tebchaws Meskas hauv xyoo 1940 thiab 1950s. Cov khoom qub yog kauv hlau pr ...

Ntxiv nrog rau kev ua kom zoo nkauj ntawm ib puag ncig, cov kab hluav taws xob high-voltage crisscrossed los ntawm phav phav volts yuav muaj kev phom sij rau cov neeg nyob ze vim qhov hluav taws xob hluav taws xob tsim nyob ib puag ncig lawv. Qhov no tsuas yog nyob ntawm lub zog ntawm electroma ...

Xyoo 1863, Thawj Tswj Hwm Lincoln tau ua Thanksgiving hnub so raws cai. Los ntawm 1941, Congress ntawm Tebchaws Meskas tau tshaj tawm txoj cai lij choj teem Thanksgiving ua plaub hnub Thursday hauv Kaum Ib Hlis. Txhua hnub Thanksgiving nyob rau teb chaws As Mes Lis Kas, tag nrho lub teb chaws yog tibneeg hu tauj coob, neeg ...

Nrog rau kev nthuav dav txuas ntxiv ntawm lub peev xwm ntawm cov tshuab hluav taws xob hluav taws xob, cov kev pab cuam ntawm cov kab hluav taws xob hluav taws xob loj kuj tseem nthuav dav. Yog li ntawd, nyob rau hauv cheeb tsam micro-sab qaum teb, cua tsis ncaj ncees yuav ua rau lub rwb thaiv tsev ntawm cov kab xa mus rau qaij towa ...

Paub daws teeb meem: Nrog kev txhim kho txuas ntxiv ntawm tib neeg txoj kev ua neej nyob, tib neeg qhov kev thov rau hluav taws xob kuj yog siab dua thiab siab dua, kuj txhawb txoj kev loj hlob sai ntawm kev lag luam hluav taws xob, ua kom cov kab sib chaws nrawm dua. Tib lub sijhawm, Lub Xeev Gri...

Cov khoom siv sib txawv muaj qhov sib txawv thiab kev ua haujlwm hauv kev siv tiag tiag. Dab tsi yog qhov tseem ceeb ntawm kev siv cov khoom siv sib txawv? 1) Suspension fittings: Hom fittings no tsuas yog siv los dai cov xov hlau lossis cov kab hluav taws xob kho qhov muag ntawm cov insulators lossis yees ...