... radiotelephone service 无线电话业务 radiotelephone frequency 无线电话频率 radiotelephone procedure 无线电话通信程序 ...
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无线电话遇险频率 radiotelephone distress frequency
无线电话遇险频率值班 radiotelephone distress frequency watch
无线电话遇险呼救频率 radio-telephone distress frequency ; telephone distress frequency
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