发布时间:2025-01-20 11:58:54
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.
装修风格是现代简约餐桌餐椅 电视柜 茶几买的实木雕刻家具如何搭配才能显得不是那么不伦不类
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