The article introduces the main functions and technical indexes of train-to-groundcommunicationsystem in track loops.
本文介绍了一种轨间环线车地通信系统的主要功能和技术指标。
2
Under the present economic and technological condition, we can only use groundcommunicationsystem to transmit signals.
在目前经济和技术条件下,只能选择地面通信系统传输信号。
3
The MUOS GroundSystem provides communications and controls interfaces between the MUOS satellites and U.S.Department of Defense Earth-based communication networks.