曲面

Application of partially discontinuous fitting function in analysis and display of geological curve surface, Advancement of Chinese mathematical geology.

局部间断拟合函数在地质曲面分析和显示中的应用，中国数学地质进展。

Application of partially discontinuous fitting function in analysis and displayof geological curve surface, Advancement of Chinese mathematicalgeology.

局部间断拟合函数在地质曲面分析和显示中的应用，中国数学地质进展。

Application of partially discontinuous fitting function in analysis and display of geological curve surface, advancement of chinese mathematical geology.beijing: press of geology,

局部间断拟合函数在地质曲面分析和显示中的应用，中国数学地质进展。北京：地质出版社，1995，14-23

In this paper, we introduces discrete Ricci flow as an efficient and powerful mathematics tools, by which we can computer conformal metric and conformal structure of the surface.

本文引入离散的Ricci流方程这个强大的数学工具，成功地计算出了曲面的共形度量和共形结构。

Three B-spline surface generation method, based on the discrete points of the process grid.

详细说明：三次B样条曲面的生成方法，基于离散点的网格化过程。

The method involves an iterative procedure, which incrementally flattens a 3D triangular mesh by region growing and obtains a parameterization with free boundary. The result is then converted to a parameterization with regular boundary by conformal mapping. Our method accounts for both the angle and area distortion during parameterization, it yields a parameterization with less global distortion and no triangular flipping.

采用区域增长算法逐层展平空间三角网格，得到空间三角网格曲面的自由边界的参数化结果，并利用保形变换将自由边界的参数化结果变换为规则边界的参数化结果；同时兼顾了参数化的角度变形和面积变形，使得参数化结果具有整体变形较小的特点，并能够避免三角形折叠的现象。

In the lastchapter of this paper,we studied the elliptic surfaces and the Donaldson seriessimply.

本文的最后一章我们简单地讨论了椭圆曲面和Donaldson级数。

And the double integral values which cannot be integrated are found by way of the method of numerical integral and the overlap principle.

地下开采煤层的分布形式多种多样，平面分布形式的煤层仅是曲面分布形式煤层的一种简单情况。

In this paper, starting from the double integral, double integral first introduced the basic concept and calculation method, the re - Top songs integral cylinder volume and surface area, for example in the application, as well as the double integral in the application of mechanics.

本文从二重积分入手，首先介绍了二重积分的基本概念和计算方法，二重积分计算曲顶柱体体积和曲面面积的在应用举例，以及二重积分在力学中的应用。

Based on the idea of the structure parametric design method, the parametric finite element model of drill chuck with complicated spiral surface character was established.'The related key technologies of drill chuck's strength analysis were discussed and solved, such as the contact analysis parameters selection, the boundary conditions and the load processing, ANSYS command一string building and so on.

本文采用结构参数化设计方法建立了含有复杂螺旋曲面特征的钻夹头参数化有限元模型；探讨和解决了钻夹头夹紧强度分析中夹爪与螺母接触分析参数的选择、约束边界和载荷处理、分析流程文件创建等关键技术问题。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。