In this paper, a core program package related for drawing pictures in micro computers with Oriented Geometry is presented to describe profile of machine parts in numerical control.
本文以有向几何为背景陈述一个微机绘图核心程序包，用它描写数控加工零件的平面外型轮廓，并在微机上绘制各种复杂的平面图形。
As the core technology of mesh processing, mesh editing aims at the effective construction of complex geometry models with intuitive and high-efficiency editing approach.
网格曲面编辑是网格处理的核心技术，其目的是为用户提供直观，高效的曲面编辑手段，实现复杂几何模型的构造。
Geometry constraint solution problem is the core of intellect CAD system. Here a new method was proposed for solving it based on the idea of assembling the divided components.
几何约束求解是智能CAD的核心问题，在研究装配模型的基础上提出了一种基于组件思想的约束求解策略。
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