研究了基于草图轮廓的拉伸与旋转特征模型重建的生成方法，以实例零件说明本文提出的重建方法是切实可行的。
The generation methods of sketch-based feature model reconstruction are presented in this thesis. Experimental results show that the methods presented here are reliable.
本文研究了UG的参数化建模技术，对基于特征和基于草图两种建模方法作了详细论述。
The paper studies in detail parametric modeling methods provided by UG, which are respectively called method based on feature and that based on sketch.
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