适用场所：天桥亮化、广告招牌、路径和轮廓标志等精品装饰领域。
Suitable places: Bridge lighting, advertising signs, path and exquisite decoration field signs such as outline.
路径挤压’技术是一个非常强大的建模工具。它通过由给定的轮廓线沿着指定的路径伸展，就能创建一个面。
The "Extrude along path" technique is a very powerful modelling tool. It consists of creating a surface by sweeping a given profile along a given path.
阐述了在PD M中采用的路径规划方式，分区折线、轮廓等距偏移和两者的复合方式，并说明了其路径的生成方法。
At last the path planning method, subarea zigzag, contour offset path and combination of them used in PDM and the path generation are described.
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