阐述基于特征的设计和制造技术，以及设计特征向加工特征的转换技术。
Design and manufacture technologies based on features are introduced. Extraction technology of machining features from design features is studied.
采用基于特征的设计方法，通过定义分型面，由塑料制品直接生成成型零件；
By using the feature-based design method and defining the parting surface, parts can be directly formed from plastic products.
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 synthesis relationship between features in feature-based design procedure is analyzed and the storage structure of bifurcate tree is shown.
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