发布时间:2025-01-20 12:05:46
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.
张掖十大最好玩的地方张掖旅游攻略必去景点_张掖必去的三个地方_甘肃张掖旅游攻略必去景点
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