国家: country; state; nation空域: airspace系统: system设施: installation; facilities间: space in between; opening的: 4次方是 The fourth power of 2 i ...通信: communication; communicate b ...国家空域系统: national airspace system国家空域系统（美）: national airspace system (nas)国家空域系统网络: nasnet national airspace system network综合国家空域系统: gnas general nas国家空域系统的仿真保障设施: nssf nas simulation support facility国家空域系统进近和着陆系统: naspals nas precision approach and landing system预测空域系统设备的销售: to predict the airspace system sales国家通信系统: national communication system; ncs national communications system通后方的通信系统: rearward communications system贝尔信息系统的通信系统: biscom bis communication system兵器系统的通信系统: wscs weapon system communication system数字集群通信系统设备: digital cluster telecommunications systems and equipment卫星移动通信系统设备: satellite mobile telecommunications systems and equipment（美国)国家通信系统: national communication system利用计算机的通信系统: computer based communication system国家空间系统基础设施管理系统: nasims national airspace system infrastructure management system国家空间系统基础设施管理系统（美国）: nasims national airspace system infrastructure management system光通信系统: optical communication system
