关键词: 几何建模, 参数化特征造型, 直接建模, 混合建模

Abstract: The three-dimensional digital modeling technique mainly has two ways:
parametric modeling and direct modeling. But both are defective in practical applications. In this
paper, a hybrid modeling technique consisting of the two is presented. This method can reflect the
intention of the designers and improve design efficiency better.

Key words: geometric modeling, parametric feature modeling, direct modeling, hybrid
modeling