Developing the template of recording feature design tree leads to flexibility and convenience of design.
采用模板记录特征设计树，灵活体现了设计思想和过程。
The synthesis relationship between features in feature-based design procedure is analyzed and the storage structure of bifurcate tree is shown.
对于在基于特征的设计过程中特征间的合成关系进行了分析，给出了二叉树的存储方法。
The extended-feature information model is constructed on the encapsulation of design knowledge and the extended-feature. Based on this model, CSG tree method is used to describe the design process.
通过对设计知识与广义特征的封装，构建了广义特征信息模型，在该模型基础上用CSG树的方法表示了设计过程。
The extended-feature information model is constructed on the encapsulation of design knowledge and the extended-feature. Based on this model, CSG tree method is used to describe the design process.
通过对设计知识与广义特征的封装，构建了广义特征信息模型，在该模型基础上用CSG树的方法表示了设计过程。
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