查询词典 triangulations

In the first place, this paper reviews two main methods in surface triangulations, named as plane-projection and direct triangulation. For the former, Delaunay triangulations are mainly enunciated.

本文回顾了三维散乱点集曲面三角剖分的两种主要方法即平面投影法和直接剖分法，对几种常用的算法作了较为详细的描述，同时对剖分算法中经常出现的数据结构作了详细的介绍。

In the first place, this paper reviews two main methods in surface triangulations, named as plane projection and direct triangulation. For the former, Delaunay triangulations are mainly enunciated. For the later, algorithm developed by B. K. Choi is particularized. Some typical algorithms are introduced in detail, as well as various data-structures built in these algorithms.

本文回顾了三维散乱点集曲面三角剖分的两种主要方法即平面投影法和直接剖分法，对几种常用的算法作了较为详细的描述，同时对剖分算法中经常出现的数据结构作了详细的介绍。

It is pointed that, in practical engineering, it is necessary to develop new algorithms with new criteria for triangulations of scattered points sampled from complicated surfaces so as to maintain the properties such as better smoothness and shape preserving. Finally the time and space complexities of various algorithms are briefly and concisely discussed, also the research trend of surface triangulations based on 3D arbit rary point-sets.

最后简要地讨论了算法复杂度以及目前剖分的主要研究方向，并指出在实际工程应用中对复杂曲面采样得到的散乱点集，要得到光顺和保形的三角剖分，需要新的剖分准则和算法。

The DTAD maximizes both the minimum internal angle and the average aspect ratio, which turns out that the DTAD is the optimal one among all triangUlations of a given point set within a domain.

DTAD具有最小角最大以及平均形态比最大的性质，因此它是给定区域和点集的最佳三角划分。

More than half a century has elapsed since the performance of three kinds of triangulations all over Japan.

自从在全日本进行这三种三角测量以来，已过了半个多世纪。

The triangulations of these beams give the diamond shape of the upper level windows and the inclination of the zinc.

这些梁给出了上层窗户钻石的形状和锌倾向的三角。

The triangulations algorithms can also be used in unorganized points, and the complexity of computation is only be O.

但是，隐函数曲面存在着三大缺点：一是绘制难，隐函数曲面可以用光线跟踪或扫描

It is pointed that,in practical engineering, it is necessary to develop new algorithms with new criteria for triangulations of scattered points sampled from complicated surfaces so as to maintain the properties such as better smoothness and shape preserving.

引 言在 CAGD/CAD、自由曲面设计、计算机视觉、地学等领域的许多应用中都会遇到曲面的多边形剖分，其中最常用的也是最基本的为三角剖分。

This method avoids the complex computing of cutting tri-prism in current methods by parameterization of surface triangulations.

该方法利用三角网格参数化在地层面三角网的基础上重建类三棱柱网格模型，避免了现有类三棱柱建模方法中切割三棱柱的复杂计算。

Voronoi diagrams for the Delaunay triangulations, such that all information related to a given element is mapped to the same processor.

文中给出了一种对图的Laplacian矩阵进行平移预处理的方法，以加速Lanczos过程中，次小特征值近似值的收敛。

Cable dampener cannot be rolled up but must be hung over the cable.

缆帆不能被卷起，必须保证处于展开状态

"This skylark is a present from my master," he says.

"这只云雀是我主人献上的礼物。"他说。