本文详细讨论了既有线表面曲面模型的数据特点、数据点分布，以及曲面模型上定义的计算等问题。
In this paper, characteristics and distribution of surface data and computation defined on these curve surfaces are discussed in detail.
由于混合曲面的造型方法在模具表面的造型中广泛采用，从而使混合曲面的造型方法在汽车覆盖件表面造型中占有很重要的地位。
As styling method of compound curved surface has been widely used in die surface styling, it possesses a very important position in surface styling of motor vehicle body cover panels.
为了减小抛光加工的表面粗糙度和提高效率，构建抛光工具路径并均匀覆盖于三维曲面上，曲面的定义域为任意二维凸区域。
Polishing tool paths were constructed to evenly cover a 3-d free-form surface defined within a 2-d convex domain to reduce surface roughness and improve efficiency.
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