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常用的传输介质分为哪两大类
更新时间： 2020-07-12 00:00:00  

常用的传输介质分为两种：

有线传输介质：包括双绞线电信号、同轴光缆电信号、光纤光信号；无线传输介质：电磁波，包括无线电波、微波、红外线、激光。

关键词： 常用 传输 介质 分为

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