这一层的主要用途是为了定义在网络间交换蜂窝网络用户信息的应用层协议。

The purpose of this layer is to define the application layer protocol for the exchange of cellular subscriber information between networks.

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此外，论文还详细给出了监测系统中各个功能模块的程序框图以及自定义的CAN总线应用层协议。

In addition, the program chart of every function module designed in the monitor system and the application agreement of CAN bus are given in this paper.

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本文针对运动控制系统定义了应用层的协议，设计了标准的通信格式以及通信带宽分配方式。

Therefore, in this paper, a special protocol is defined for the motion control systems, and a standard communication format and a communication bandwidth distribution method are designed.

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