发布时间:2025-02-02 20:48:54
看您要什么效果的了,还有就是什么地区的,如果是木质的容易些,很多建材市场中做仿古门的地方都可以定做这种,如果是外门檐我个人建议您做磨具的
在三相四线制中零线也做接地线而且是必须的如果零线断了用电器外壳都带电那为什么要接地呢
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