曲面

In order to deal with sculptured solids, a new boolean operation algorithm is researched, designed and realized. A reasonable error control method is introduced to raise the reliability of the algorithm.

为了能处理带各种自由参数曲面的形体，对含有trimmed曲面实体的Boolean运算算法进行了研究、设计和实现，并提出了一种合理的误差控制法，提高了Boolean运算的可靠性。

The coal seam floor surfaces reconstructed by general interpolation methods of GIS with bore-hole datasets usually do not fit with the datasets collected by mine geological survey.

常用GIS曲面建模方法采用钻孔数据构建煤层底板高程曲面，在局部地区往往不能与矿井地质手段获得的其它数据相契合。

The first is how to determine boundary curve of surface in triangular domain and after deducing, simultaneous equations is proposed in the dissertation. The second is how to determine the coupling parameter. The third is present simultaneous equations in order to obtain G1 continuous considering the continuity between two triangular patches and the fitness rules.

具体的工作体现在三个方面：一是对拟合条件下的三角域曲面边界线的确定，本文经过推演给出了求解方程组；二是对耦合参数的确定；三是在考虑相邻两片三角域曲面连续性的同时将拟合的规则纳入，给出了求解方程组以达到G 1连续。

. In this thesis, a common mathematical model of the interpolating surface of boundary curves to be given is introduced.

本文还介绍了一个构造给定边界线的插值曲面的一般数学模型，并将工程中常用的几种特殊插值曲面的描述方法统一于这个数学模型之中。

Prove that if this quantity is bounded above by that value of the Veronese surface then x is either a totally umbilical sphere or a conformal Veronese surface.

最后我们模仿3维的情况，引进一个保角不变量，并证明此保角不变量的上界若为Veronese曲面之值，则x不是全脐球面就是Veronese曲面的保角类。

This paper discusses minimal surface in arbitrary boundary and describes a new method for approximating to minimal surface with B- spline surface in arbitrary bounded domain.

讨论了任意边界下的极小曲面造型问题，提出了一个用B-样条函数做任意有界区域上极小曲面造型的新方法。

The two inner mounting positions of each camber link offer an easy way to adjust camber rise.

两个内安装的立场，每一个曲面的联系提供一种简单的方法来调整曲面上升。

The exterior curved surface of tool handle was obtained according to the camber of human body under pressure.

为减小手持工具使用者承受的压强峰值并提高总体舒适度，设计了有压反求的实验方法，根据人体曲面在压力下的形状得到工具手柄表面曲面。

With the Lagrange multiplier method , the minimum distance of the center of a circle and a quadric surface was provided and the tangency condition of curve and surface was given.

利用拉格朗日乘子法求解二次曲线和二次曲面之间的最小距离，给出了曲线与曲面相切的条件。

The paper deals with curvature line and curvature characteristic of developable surface based on differential invariant of developable surface and it details curvature line and curvature characteristic of cone and tangent surface .

本文通过可展曲面的微分不变量，导出可展面的曲率线与曲率特征，并以锥面和切线曲面为例阐明这些特性的几何意义。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。