发布时间:2025-01-20 12:13:30
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.
橱柜转角处两个门的拉手当打开一扇柜门时拉手总是碰撞时间长啦就撞坏啦 可不可以安装一个防撞条什么的
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