Vim li cas thiaj li yuav tsum tau them cov tswj hwm hauv lub hnub ci teeb pom kev zoo? Cov tswj tswj kev them cov roj teeb thiab thaum tsis muaj lub zog tsim tawm, lawv tig rau LED. Hmo ntuj thaum hluav taws xob tsis p...
Lub teeb dej nyab yog ib hom teeb pom kev zoo sab nraum zoov uas tuaj yeem teeb pom kev ntau ntawm thaj chaw thaum hmo ntuj. Cov teeb no feem ntau yog siv rau thaj chaw thiab kev lag luam kom nyob deb ntawm txhua tus huab tais ntawm c ...