busy line

短语词组

短语

• busy main line 繁忙干线
• busy railway line 繁忙的铁路线
• Busy -Line Effect 热线效应
• busy time of line [计][通信]线路占用时刻
• busy main -line 繁忙干线
• busy single track line 繁忙单线铁路
• signal for the busy line 忙音
• call forwarding - busy line 呼叫传送占线
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