发布时间:2025-01-23 07:02:52
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,
水池内安装12个涌泉喷头 要求喷水高度在200300左右涌泉喷头大小为dn25
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