发布时间:2025-01-20 12:07:44
你说的热缩管其实是电缆附件,你可以查看合格证里所说的适用截面来划分,一般分为五个10-16,25-50,70-120,150-240,300-400。
万用表的 3 5476位和 3 3474位都有什么含义区别是什么
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