建立一个有效率的拓扑，只有当你需要时才使用多边形。

Build with an efficient topology - use polygons only where you need them.

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在这里，他和挤出两个细分多边形图元和自定义的多边形为他建立了形式和形状这部科幻坦克模型的各个部分。

Here he extrudes and subdivides both polygon primitives and custom polygonal shapes as he bUIlds out the forms and shapes for the individual parts of this sci-fi tank model.

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根据协调映射的理论，建立了平面上圆形域、矩形域、多边形域等参数域的映射模型，可根据轨迹规划的需要来选择映射的边界。

Based on the theory of conformal map, map model is built for planar parametric circle, rectangle and polygon regions. The boundary of parametric region rests with the need of tool path planning.

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