发布时间:2025-01-20 11:56:59
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.
我从网上找了一家开淘宝网店的公司说他们帮我装修店铺帮我提供货源但是要交钱的他们说达到定是不是骗人的
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