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在分析机械产品ＣＡＤ系统特点的基础上，提出产品ＣＡＤ系统应该是程式化设计和交互式设计相结合的观点，并建立了一种基于参数化技术的产品ＣＡＤ系统的体系结构。
Based on the analysis of the characteristics of CAD system of mechanical products, it is proposed that the product CAD system should be a combination of programmed design and interactive design, and an architecture of product CAD system based on parametric technology is established.