发布时间:2025-01-23 07:05:14
应该选用双投的的转换开关,它的动触点接线端子接用电输出,两边的静触点分别接发电机输出和市电,
房屋顶上经常看到一个风车一样的东西外形如厨师的帽子在不停转动请问那是什么东东做什么用的
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