铁路移动通信系统(GSM-R)
Global System for Mobile Communications for Railways(GSM-R
铁路数字移动通信系统
GSM for railway(GSM-R
railway digital mobile communication system
铁路通信系统
Railway communication system
Railroad Communication System RRCS
铁路移动通信
Railway mobile communications
B3G移动通信系统
Beyond 3 Generation mobile communication system
B3G mobile communications system
beyond 3G mobile communications system
CDMA移动通信系统
CDMA mobile communication system
GSM(全球移动通信系统)
asymmetric thermal environment
GSM
IMT-Advanced移动通信系统
IMT-Advanced mobile communication systems
TD-SCDMA移动通信系统
TD-SCDMA system for mobile
TD-SCDMA mobile communication system
WCDMA移动通信系统
WCDMA mobile communication system
低轨卫星移动通信系统
LEO satellite mobile communication system
第3代移动通信系统
3 G
third generation mobile communication systems
third generation wireless mobile communication systems
third generation mobile communication system
third generation mobile communication
The 3rd generation mobile communication system
第3代移动通信系统(3G)
3G mobile communication system