运用参数化程序设计语言APDL，引入参数化变量，和判断、循环等流程控制命令，详细说明了梯级参数化模块的开发过程。

Using the parametric programming language APDL, introducing parametric variables, the judge and circulation flow control command, detailing description of steps parameter module development process.

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以液压元件参数化设计为例，介绍了基于命令解释器模型的程序设计方法。

Take the parameterized design of hydraulic component as an example the program designing method based on command explainer model was introduced.

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面向对象的有向超图参数化设计模型，用面向对象的程序设计方法可以很容易的实现。

This model has the virtue of the directed hypergraph and is easy to be realized through object-oriented programming.

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