1. Txheeb xyuas "CCC" thiab "QS" cov ntawv pov thawj.
Rau cov khoom uas xav tau "CCC" lossis "QS" ntawv pov thawj, koj tuaj yeem nug cov ntawv pov thawj ntawm cov chaw tsim khoom ntawm lub vev xaib cuam tshuam. Yog tias koj nrhiav tsis tau nws, nws qhia tau hais tias cov chaw tsim khoom tsim nyog muaj teeb meem thiab tsis tuaj yeem yuav cov khoom, thiab koj yuav tsum tau ceeb toom rau cov cai tswj hwm.
2. Saib daim ntawv tshuaj ntsuam xyuas.
Qhov zoo ntawmcov kab mob thiab kab mobmuaj feem xyuam rau tib neeg lub neej thiab kev nyab xeeb ntawm vaj tse. Ib qho kev nyab xeeb me me tej zaum yuav muaj qhov cuam tshuam tsis tau. Nws ib txwm tau teev tseg raws li qhov tseem ceeb ntawm tsoomfwv saib xyuas thiab tshuaj xyuas. Cov tuam txhab lag luam tsis tu ncua yuav tsum tau soj ntsuam los ntawm lub tuam tsev saib xyuas tsis tu ncua. Thaum yuav khoom, koj tuaj yeem thov daim ntawv xeem. Ob tus neeg nruab nrab thiab cov tuam txhab tsim khoom yuav tsum muaj peev xwm muab cov ntaub ntawv soj ntsuam ntawm lub chaw soj ntsuam zoo. Txwv tsis pub, qhov zoo ntawm cov khoom siv hlau thiab cable yuav tsis muaj lub hauv paus thiab tsis tuaj yeem yuav.
3. Saib ntawm lub ntim.
Cov khoom tsim nyog hlau thiab cable yuav tsum tau cim kom meej nrog cov khoom qauv, specification, tus qauv tooj, lub npe ntawm lub Hoobkas, qhov chaw ntawm lub hauv paus chiv keeb, thiab lwm yam. Txhua lub tuam txhab uas tsim cov khoom raws li lub teb chaws cov qauv yuav tsum muaj cov ntaub ntawv no ntawm lub ntim. Xaiv cov khoom uas zoo heev ntim thiab luam ntawv ntshiab.
4. Saib lub ntsej muag.
Cov tsos ntawm cov khoom yog du thiab puag ncig, thiab xim yog uniform. Hlau thiab cable tuam txhab uas muag uas nws cov khoom ua tau raws li cov kev cai ntawm lub teb chaws cov qauv nruj me ntsis tswj kev yuav khoom ntawm raw khoom, ntau lawm cov cuab yeej thiab ntau lawm technology nyob rau hauv thiaj li yuav txhim kho cov khoom zoo. Cov tsos ntawm cov khoom siv hlau thiab cable ua tau raws li cov qauv kev cai, du thiab puag ncig, thiab xim tsis sib xws. Txhawm rau txuag cov nqi, cov khoom cuav thiab cov khoom tsis zoo muaj qhov ntxhib thiab matte zoo li.
5. Saib ntawm tus neeg xyuas pib.
Tus neeg xyuas pib yog glossy, thiab DC tsis kam thiab tus neeg xyuas pib qhov loj me ua tau raws li cov qauv hauv lub tebchaws. Hlau thiab cable cov khoom uas ua tau raws li cov kev cai ntawm lub teb chaws cov qauv, txawm tias txhuas conductor los yog tooj liab conductor, kuj ci thiab tsis muaj roj. Yog li ntawd, DC tsis kam ntawm tus neeg xyuas pib ua tau raws li lub teb chaws tus qauv, nrog kev ua haujlwm zoo thiab kev nyab xeeb siab. Cov tub ntxhais tooj liab ntawm cov hlau zoo yog ua los ntawm cov tooj liab zoo nrog cov purity siab thiab zoo conductivity raws li cov khoom siv raw ntawm cov tub ntxhais tooj liab, uas muaj cov hlau zoo heev. Cov hlau luster ntawm cov hlau tsis zoo tooj liab tub ntxhais yog qhov tsis zoo, uas tuaj yeem ua kom pom tseeb ntawm qhov muag liab qab. Cov khoom siv tooj liab siv rau cov khoom siv tooj liab ntawm cov hlau tsis zoo muaj cov ntsiab lus impurity siab, ua haujlwm siab thiab tsis zoo conductivity, loj poob ntawm lub zog hluav taws xob ntawm cov kab, cua kub loj ntawm cov hlau tsis tuaj yeem ua kom muaj kev nyab xeeb ntawm kev siv, uas yooj yim rau kev siv. ua rau luv luv ntawm cov kab thiab ua rau cov khoom puas. Dab tsi ntxiv, cov xaim tsis zoo yog qhov yooj yim heev ua rau hluav taws thiab ua rau peb lub neej thiab kev nyab xeeb ntawm vaj tse.
6. Ntsuas qhov ntev ntawm cov xov hlau thiab cables.
Ntev yog lub ntsiab intuitive txoj kev kom paub qhov txawv ntawm cov khoom uas ua tau raws li cov kev cai ntawm lub teb chaws cov qauv thiab cov khoom cuav thiab shoddy. Thaum muas, tsis txhob greedy rau cheapness. Yuav Cov Hlau thiab cov kab hluav taws xob uas nws qhov ntsuas ntsuas tau qis dua lawv cov ntsuas nominal. Qhov ntev yuav tsum tau ua raws li tus naj npawb ntawm cov meters, thiab qhov tso cai yuam kev rau 100 meters yog ± 0.5 meters. Tsis txhob cia cov khoom luv nqi ua rau koj tsis meej pem.
