ThomasEdison'sincandescent(白熾的)light-bulbwillhavebeenb...
問題詳情: ThomasEdison'sincandescent(白熾的)light-bulbwillhavebeenbroughttoanendby2016becauseitusestoomuchenergy.The"greatlighthope"toreplaceitisabulbmadefromlight-emittingdiodes(兩級管),orLEDs.Mor...
問題詳情: ThomasEdison'sincandescent(白熾的)light-bulbwillhavebeenbroughttoanendby2016becauseitusestoomuchenergy.The"greatlighthope"toreplaceitisabulbmadefromlight-emittingdiodes(兩級管),orLEDs.Mor...