发布时间:2025-01-19 08:12:08
“地”是零电位,物体带静电,电位为正,物体和“地”形成电势差,用导线把物体和“地”连起来就会形成电流消除物体上静电。
有些人家墙上挂着几十年前放相片的的东西就是一次可以放好多之后再覆盖上玻璃是叫什么名字呢
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