地: the earth空: leave empty or blank; empty; ...通信: communication; communicate b ...系统: system航空通信系统: aeronautical communication system地空通信: ground-to-air communication泛美航空通信系统: pan-american airways communication system地空通信频率: ground-air radio frequency地空通信无线电台: ground to air radio station; ground-to-plane radio station光通信系统: optical communication system机通信系统: man-machine communication system通信系统: communication system; communications systems; reporting system主通信系统: main communication system内部通信系统, 相互通信系统: intercommunication system办公通信系统: office communication system保密通信系统: privacy communication system报知通信系统: warning communications闭路通信系统: closed-circuit communications system编码通信系统: navamander标准通信系统: communications systems standard波导通信系统: wcs waveguide communications system厂内通信系统: intraplant communication system车辆通信系统: vcs vehicular communication system城市通信系统: communication system传真通信系统: facsimile communicatio system; facsimile communication system