1、关于笔记本充电时发出声音是正常的。2、这是因为当电源输出电流的时候,那个吱吱声是适配其中的磁性元件发出的声音,比如电感啦、开发者_运维问答脉冲变压器啦。像有的适配器声音大,有的声音小,这是一个做工[详细]
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