避雷针为什么要装在楼顶？ 为什么现在的房顶上都要安装避雷针？？大神们帮帮忙
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因为带电的云是从上往下运行的,避雷针在高处,先接触到带电的云团,可以首先将云中的电释放掉等到房子接触到云的时候,云团中就基本没有或只有少部分电了,从而也就没有危险发生了?
楼顶的避雷针
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