mold base短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 型基体 So it greatly increases modeling efficiency on building of mold base CAD system, assures interact associatively, and aids the design though knowledge conveniently encapsulated in the virtual part. 跨零件建模技术能保持零件的相关性，并且通过虚零件方便地封装知识，实现知识辅助设计。 xuebao.sdju.edu.cn