无线数据通讯系统采用SA68D11无线数传模块接收来自地面系统的命令，并向地面系统发送机车状态参数。
The former receives the orders from wayside system by radio data module SA68D11 and delivers locomotive's state informations to wayside system;
本发明还公开数据重传方法、发送机、接收机和数据传输系统。
The invention also discloses a data retransmit method, sender, receiver and data transmission system.
本文只不过想说明一下IP数据的结构和发送机制。
This paper is merely to point out the IP data structure and delivery mechanism.
本文只不过想说明一下IP数据的结构和发送机制。
This paper is merely to point out the IP data structure and delivery mechanism.
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