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如何选择网线,网线水晶头接法顺序,网线超5类6类有什么区别?网线接头怎么接,网线插座接法
https://www.bilibili.com/video/BV1gh411S7at/?vd_source=ce598858636a55101b681a3971c64f1f
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https://www.bilibili.com/video/BV1gh411S7at/?vd_source=ce598858636a55101b681a3971c64f1f