... 电视通信线路 television link 多点通信线路 multi-point circuit 复合通信线路 composite communication link ...
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multi-point explosive circuit 多点起爆网络
Multi-point synchronous explosive circuit 多点同步起爆网络
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When an one-point or multi-point earth fault occurs, the monitor can quickly detect the serial number and polarity of the branch circuit earthed, and meantime give alarm to the operator on site.
在直流系统发生一点或多点接地时，该装置能迅速检查发生接地的直流支路编号及接地支路的极性，同时报警提示现场运行人员。
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