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da lei jiu jing yong bu yong ba cha tou
Author(s): 
Pages: 78
Year: Issue:  12
Journal: Ordinary People's Life

Keyword:  防雷装置雷雨天气笔记本电脑电源线电子产品低压系统电压钳第一道防线空间电磁场中压配电线路;
Abstract: <正>网络上一直流传着"防雷秘籍",如人们在雷雨天气要避免使用家用电器、务必切断电源等等。此举真的有必要吗?技术专家表示,有建筑物避雷防雷装置"把关",雷电不会通过电源线侵入电器。比如,笔记本电脑电源线的一端有个凸起的圆柱体,它的内部是一
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