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.
介绍了以反求工程为技术支撑的复杂曲面模具数控加工的基本原理和实现过程关键技术—样件表面数字化技术和曲面重构技术。
The key technology about surface digitizing and reconstruction in the mold tooling digitized manufacturing based on the reverse engineering as well as the basic theory is analyzed.
针对机械零件反求建模过程中常见二次曲面的表面重建问题，提出了曲面拟合分步计算法。
To solve the problem of quadric surface reconstruction in reverse modeling for mechanical parts, a two-step fitting algorithm was presented.
地质界面模型是由煤层的顶底板插值曲面经煤层边界和断层曲面裁剪而成的，地表面模型是对原始地表数据和矿坑数据进行三角剖分得到的三角形网格。
The interpolation face of coal seams is trimmed by boundary and the closed polygons of up and down faulted blocks to form the deposit interface model. The earths surface model is founded.
首先，提出曲面是分片光滑的假设，表面曲率需从该像素所属的光滑曲面片来估计。
Firstly, this paper assumes that the surface of range image is piecewise smooth, and estimates curvature from the smooth piece of surface to which the current point belongs.
地球椭球体表面是曲面，而地图通常要绘制在平面图纸上，因此制图时首先要把曲面展为平面。
Earth is an ellipsoid and its surface is curved, but the maps are usually drawn to the floor plan on paper. So before drawing you must spread the curved surface surface to the plane first.
地球椭球体表面是曲面，而地图通常要绘制在平面图纸上，因此制图时首先要把曲面展为平面。
Earth is an ellipsoid and its surface is curved, but the maps are usually drawn to the floor plan on paper. So before drawing you must spread the curved surface surface to the plane first.
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