单词	后视读数
释义	后视读数back reading
随便看	radio command guidance system radio command link radio command system radio common carrier radio common channel radio common channel(s) radio communcation radio communication radiocommunication radio communication beyond the horizon radio communication circuits radio-communication engineering radio communication equipment radio communication failure message radio communication failure message (rcf) radio-communication frequency radio communication net radio communication regulation radio communication service radio communication， mateur radio company of america radio company of america {=rca} radio compass radio compass station radio---compass station