The main functions, programming interfaces and simulation methods of 20-SIM software which is developed by control engineering department of Twente University(the Netherlands) are briefly introduced.

在讨论控制系统涉及领域广的基础上，提出利用20-SIM软件进行建模与仿真。

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A train operation simulation system (MAS sim) is developed for the purpose of studying various issues concerning traffic organization under Moving Automatic Block condition.

针对移动自动闭塞系统的特点，研究开发了列车运行仿真系统(MAS - SIM)，用于移动自动闭塞条件下的行车组织若干问题的研究。

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The main functions, programming interfaces and simulation methods of the 20-sim software is briefly introduced in this paper.

本文简要地介绍了20 - SIM的主要功能、编程环境和仿真方法。

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