发布时间:2025-02-02 19:27:55
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,
家里装修烟机的烟管想做到厨房的吊顶里面烟管直径大概在18公分请问吊顶距离原来屋顶高度多少能让
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