GSM造句

There has been consistent growth in GSM mobile subscribers.
全球通手机用户持续增长。

GSM - R network is constructed with focus on the railway service.
GSM -R 网络的建设是以铁路通信业务为核心.

The convertor has interfaces of GSM protocol and RS - 232 standard.
利用西门子TC35射频模块和MCU智能控制功能,设计具有标准的GSM协议接口和RS232接口电路.