Parametric design combined with mechanical engineering practice, the issue that transforms a draft drawing into a parametric drawing program is put forward and researched deeply.
结合参数化设计和机械工程的实际，提出并深入研究了从静态草图到参数化绘图程序的自动转换问题。
In the specific engineering practice, if the program is wrong, the development design related will waste more time and money.
在具体的工程实践中，如果因为方案有误而进行相应的开发设计，会浪费较多的时间和经费。
Practice proves that the program can calculate accurately with a very high precision and reliability. It can speed up the design of complicated tools greatly.
经实践证明该程序运算准确，精确度及可靠性很高，可大大加快复杂刀具的设计。
Several integrated standards related to concrete mix proportion design and ample practice; the program is provided with high standardization, intelligence and practicability.
程序集成了混凝土配合比设计相关几大规范和丰富的实践经验，具有较高的规范化、智能化和很强的实用性。
The electrical control circuit and the design of the PLC program were analyzed in detail; it has a certain practice value.
对电气控制线路分析，PLC程序设计进行了具体阐述，并分析了改造效果，具有一定的应用价值。
With the CAD Program, controller is designed for the PWM system, Its realization shows good dynamic properties and that the design is valuable in engineering practice.
利用该方法为直流脉宽调速系统设计了控制器，并在实验室进行了实现，显示了良好的动态特性，表明控制器具有较大的工程实用价值。
With the CAD Program, controller is designed for the PWM system, Its realization shows good dynamic properties and that the design is valuable in engineering practice.
利用该方法为直流脉宽调速系统设计了控制器，并在实验室进行了实现，显示了良好的动态特性，表明控制器具有较大的工程实用价值。
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