特征造型技术是新一代CAD系统的关键技术，是产品模型技术的核心。

Feature modeling is the key technique in the new CAD system, it is the core technique of product model.

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因此，基于细胞元模型的语义特征造型已成为当今CAID系统的主要研究的方向之一。

So, the semantic feature modeling technique based on cellular model has become very important in most CAID systems.

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并以实例进行分析，初步得出特征造型系统的模型。

The elementary model of the characteristic molding system is educed with the example analysis.

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