combined line and ringing key
电机工程专业英语词汇翻译C-64-SCIdict学... ... 长途登记接线合用台 combined line & recording board (CAR board) 听话振铃合用键 combined line & ringing key 组合电阻 combined resistance; joint resistance ...
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combined line and ringing key
线路和振铃键组合
以上为机器翻译结果，长、整句建议使用 人工翻译 。