Free-form surfaces 由形式曲面 ; 自由曲面
Optical free-form surfaces 光学自由曲面
free-form surfaces polishing 自由曲面研抛
modeling of free form surfaces 自由曲面造型
ultra-smooth free-form surfaces 超光滑自由曲面
reconstruction of free-form surfaces 自由曲面重构
reconstruction of free form surfaces 自由曲面重构
nc machining of free-form surfaces 自由曲面数控加工
Connectivity between free-form surfaces 自由形态表面之间的连接
A simple topology model is presented to represent complex topology structure of free form surfaces to compose arbitrary object for reverse engineering.
首先给出能够表示任意多个自由曲面拓扑结构的描述，该模型可用于表示反求工程中的任意物体。
Spline surfaces are very important for the modelling of free form surfaces, because of their flexibility, simple concept and easy shape manipulation by the control points.
样条曲面具有灵活性，概念简单，易于通过操作控制点控制形状，所以对于自由曲面建模十分重要。
To aim at the research on cutting direction in NC machining of free-form surfaces, a simplified time model for tool trace is established, and the system of tool path programming is discussed.
针对自由曲面走刀方向数控加工的研究，建立了简化的刀具轨迹时间模型，并对路径规划的系统进行了讨论。
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