A continuity tester injects an AC signal into the conductors of a cable to find circuit faults.

一个连续性测试器给电缆导线注入交流信号，从而找到电路故障。

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A continuity tester injects an AC signal into the conductors of a cable to find circuit faults.

一个连续性测试器给电缆导线注入交流信号，从而找到电路故障。

youdao