发布时间:2025-02-01 11:09:29
电缆套官的型号与电缆截面相关,也与成品外径.
一般来说,电缆的截面不得大于电缆套管的内截面40%.
电缆的截面=成品外径的平方*0.7854.
电缆套官的内截面=内径的平方*0.7854.
我新买房是在顶楼 楼顶有楼下几家的水池都修在我楼顶现在水池漏水该谁来承担水池的维修费用谢谢
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