A special CAD system for the centrifugal type ventilator was developed.
研制开发了离心通风机的专用计算机辅助设计系统。
Describes some of general principles of user interface design and some special principles for designing doctor-CAD system.
论述了图形界面设计的一般原则，并提出了针对博士CAD系统的特点所用的特殊原则。
The special Computer Aided Design (CAD) system is the necessary way to improve the sound quality of vehicle by promoting the design quality and efficiency of products.
专用计算机辅助设计（CAD）系统可以改善产品设计质量、提高生产效率，是提高车辆声品质的重要方法。
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