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用交流电测试外线故障简单易行,可以随时发现有线广播外线的故障。只要把输出配电盘稍加改动即可对每条线路进行测试。具体改动和使用方法如下:
Using AC to test outside faults is simple and easy, you can always find out the cable outside the fault. Simply change the output power strip to each line for testing. Specific changes and methods of use are as follows: