发布时间:2025-01-20 12:07:40
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.
刚在太原一统家居定了些家具感觉不错服务也挺好可是一个多月后才可以到货有保障吗
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