They must take the appropriate protective measures in order to avoid over-voltage and over-current generated by the transmission lines of communications equipment and personnel hazards.
因此必须采取适当的保护措施以避免因过电压及其所产生的过电流对传输线路、通信设备和人员造成的危害。
They must take the appropriate protective measures in order to avoid over-voltage and over-current generated by the transmission lines of communications equipment and personnel hazards.
因此必须采取适当的保护措施以避免因过电压及其所产生的过电流对传输线路、通信设备和人员造成的危害。
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