Qhov tseeb tau ua pov thawj tias lawv tab tom hloov qhov ntev-sawv high-voltage txoj kev teeb nrog kev nyab xeeb thiab ntau zog-npaum-voltage LED teeb.Peb tau pom ...
Txhawm rau kom muaj zog ntau dua, ntau tus neeg tau hloov lawv cov teeb pom kev zoo nrog lub teeb-emitting diode (LED) qhov muag teev.Txawm li cas los xij, cov ...