After practising in Hongchen road surface design of comprehensive transformation works, two technique problems were discussed about road surface rebuilding and broadening in road extension design.

通过洪城路综合改造工程的路面设计实践，对改扩建道路设计中路面加铺及加宽两个技术难题进行了探讨，提出了一些设计处理方法。

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Products surface digitizing and three-dimensional model rebuilding are two key technologies of re.

产品表面的数字化和三维模型重建是RE中的两项关键技术。

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During rebuilding of femur model, the theme has solved well some problems: orientation of contours, spline approximate, fractal of curved surface as to guarantee accuracy of model.

在重建过程中，本文很好地解决了轮廓线定位、样条化光顺、曲面分型等难题，保证了三维模型的精确度。

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