When they are programmed, most of needed characteristic data could be attained from the CAD design system.

它们编程所需要的大多数特征数据均可从CAD设计系统中得到。

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Based on the analyse of current 3d CAD design system, the basic conception of 4d information model is expounded.

在对当前三维CAD设计系统进行分析的基础上，阐述了4d信息模型的基本概念。

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Also, we are with strong technical force, the company has different kinds of high quality technical personnel and CAD design system.

技术力量雄厚，公司拥有各类高素质的技术人员，备有CAD辅助设计系统。

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Students in the program learn to use computer-aided-drafting (CAD) to design a photovoltaic system, they learn about the sorts of issues that come up when designing such a system, and they learn about the installation and maintenance of such systems.

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