SP is a portable, strongly-typed, event-oriented, discrete system simulation language, It is derived from PASCAL by adding some simulation functions.

SP语言是可移植、强类型、面向事件的离散系统模拟语言，是以PASCAL语言为基础进行模拟功能扩充而形成的。

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FORTRAN language have obtained general application in hydraulic digit simulation, but FORTRAN language of microcomputer system has not graph function.

FORTRAN语言在液压数字仿真中获得了普遍的运用，然而微机系统的FORTRAN语言一般都没有图形功能。

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UML is a standard object-oriented modeling language. It can be applied not only in the development process of software but also in the simulation for complex system.

统一建模语言是一种基于面向对象技术的标准建模语言，其不仅可以在软件开发过程中使用，也可在复杂系统仿真中应用。

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