Puas tuaj yeem ua kom cov neeg ua haujlwm? Dab tsi yog cov yas ua?
Cov Plastics feem ntau suav tias yog cov hluav taws xob tsis zoo heev, uas yog vim li cas lawv tau siv los ua kom insulating sheaths rau cables. Txawm yog, Cov kws tshawb fawb tau tshawb pom tias cov yas conductors tuaj yeem tsim tau los ntawm kev sib xyaw cov yas nrog lub siab concentration ntawm filamentary carbon dub thiab coking compound.. Yas conductors yog … Nyeem ntxiv
