介绍了列车通信网络的两条总线，即绞线式列车总线（WTB）和多功能车辆总线（MVB），并分析了两层网络拓扑结构。

This paper introduces two buses of train communication network:the wire train bus(WTB) and the multifunction vehicle bus(MVB), analyzes two layers topo.

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本文研究设计了基于多功能车辆总线的机车逻辑控制单元，讨论了列车通信网络实时协议的实现。

This dissertation researched and designed the locomotive LCU based on MVB, discussed the realization of real-time protocol of TCN.

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本文对TCN（列车通讯网络）与MVB进行了简要的介绍，在此基础上分析了MVBC（多功能车辆总线控制器）的功能及优点；

This paper introduces TCN(Train Communication Network) and MVB in brief, on the basis of which it analyses the function and benefit of MVBC;

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