国际空中交通通信系统
international air traffic communications system
B3G移动通信系统
B3G mobile communications system
beyond 3G mobile communications system
Beyond 3 Generation mobile communication system
CDMA通信系统
CDMA communication system
CDMA移动通信系统
CDMA mobile communication system
DS-SS通信系统
DSSS communication system
GSM(全球移动通信系统)
asymmetric thermal environment
GSM
GSM900通信系统
GSM900 mobile communication system
IMT-Advanced移动通信系统
IMT-Advanced mobile communication systems
LEO(低轨道)小卫星通信系统
LEO (Low Earth Orbit) micro-satellite communication system