三角形划分

All meshing elements except those are adjacent to edge and transition elements are equilateral triangle, which is very useful for finite element computation.

提出了一种可在平面内进行三角形有限元网格划分的方法，该方法可以在任意二维区域进行剖分；剖分单元除了边界和部分过度单元外，主要为等边三角形。

The microspore was more like a tetrahedron, whilethe polar was more like a triangle. The number of microspore in every anther wasbetween 2600～3600, so the amount of pollen was quite large that it was propitiousto spread and pollination. P/O was 8088 and the breed system was singleheterosexual copulatoryb. The viability of pollen was normally above 50%. The testof pollen culture showed that the viability of pollen was up to the tiptop under thehigher temperature and lower humidity (38℃,40%),while it was weakest under thelower temperature and lower humidity (16℃,40%).The OCI is 4, and the breedsystem was belong to autocopulation. If it was heterosexual copulatory, there must beintermediums for pollination. It was recorded there were more than 40 species ofinsects on the anthotaxy or followers of Malania Oleifera. Under different weather,different living environments and different plants the frequency and rush hour of theinsects to visit the followers were different. Actions of different kinds of insect werealso different. According to the results of the observation, the form of fluid and seedof Malania Oleifera mostly rely on the action of insect pollination, especially thebees.

蒜头果的花序为聚伞形花序，有小花8～10朵，小花较小；按花粉大小等级划分，蒜头果的花粉粒属于小的范围；花粉粒呈近四面体，极面为近三角形：每粒花药所含的花粉粒在2600～3600粒之间，花粉量较大，有利于花粉的传播和授粉；胚珠比值为8088，繁育系统为专性异交类型；花粉生活力一般在50％以上；在不同温度湿度条件下测得蒜头果花粉的生活力在高温低湿(38℃，40％)的条件下最高，在低温低湿(16℃，40％)的条件下最低；杂交指数值为4，繁育系统自交亲和，异交，需要传粉者；记录到的访花昆虫有40余种，访花昆虫的访花频率及高峰时间不同，不同种类的昆虫的访花行为也是各有所异；从观察的结果看，蒜头果的种实的形成大多数依赖于传粉昆虫的活动，其中主要是蜂类。

Firstly, a spherical mesh with regular subdivision connectivity is constructed to partition the spherical domain into some small regions. Then the region, which contains the query point p, is found according to the position of p and selected as the search area for locating p. During the point location, the barycentric coordinates are used to extract local heuristic information about the location of p so as to find the shortest path from the start triangle to the target one containing p.

通过构造规则子分网格将原始球面网格区域划分成若干具有子分层次关系的查询小块；在进行查询前，根据查询点p的位置找到它所在的小块作为搜索区域，从而极大地缩小了查询范围；在查询过程中，根据重心坐标所包含的启发信息，选择一条从初始搜索三角形到目标三角形的最短查询路径。

On the basis of experimental research, this thesis applies 2-dimensional non-linear finite element method to the analysis of transient temperature field on the section by means of relatively high precision triangular element of six joints. When the temperature field is analyzed, finite element reseaus are divided in space field and finite difference reseaus are divided in time field, and then the program is compiled. The computing results are in good agreement with the test data. It indicates that the program is stable and precise.

在试验研究的基础上，本文采用精度较高的三角形六结点单元对构件截面二维非线性瞬态温度场进行了有限元分析，即在空间域内采用有限元网格划分，在时间域内采用有限差分网格划分，据此编制了计算程序，计算结果与试验数据符合较好，程序稳定性好，精度满足要求。

The program incorrectly classifies this triangle as a scalene triangle instead of classifying it as an isosceles triangle.

程序错误的把这个等腰三角形划分成了不等边三角形。

Edges are first detected in the original image and then cut equidistantly into some segmentations, and the end points of segmentations are gathered into a points set. A constrained Delaunay triangulation is yielded from the points set and then a graph is attained too.

首先提取图像边缘，然后将边缘分段切割，得到端点集合，然后从端点集合生成Delaunay三角形网络，以Delaunay三角形为顶点，相邻三角形的属性差异作为边的权重，构造图；以基于图的分割算法生成最小生成树，划分区域。

The main idea of this algorithm is as following: firstly, the rectangle is classified by the value and position of its vertices; secondly, the rectangle is divided into some mangles through classification; thirdly, trace and render contour on each triangle obtained above.

算法基本思想是：先对矩形网格4个顶点值按照其大小和相互位置关系分类，然后把矩形网格划分为若干个三角形网格，最后在三角形网格内完成等值线的追踪和填充。

In triangulating within certain tolerance, selecting the restrict angle is resolved, and the approach for checking up the error is introduced.

针对有、无边界的空间散乱离散点的三角划分分别提出了收敛三角划分算法、扩展三角形划分算法。

The conditions for the existence of crank for Watt's mechanism, a basic type of one-degree-of-freedom planar six-bar mechanism,are investigated with the triangular dividing method and the method of instantaneous fixing of the driving bar.

本文采用平面杆机构的三角形划分法及主动杆瞬时凝结法探讨了单自由度平面六杆机构的一种基本型式——Watt型机构的曲柄存在条件；并用取极限的方法得到了其诱导机构的曲柄存在条件。

Based on a certain typical kind of communication and command armored car, a method of complicated face meshing by the MOM is proposed and the text file with Visual LISP language embedded in AutoCAD is dealt with.

以具有典型性的某型通信指挥车为载体，提出了一种基于矩量法的网格划分算法，并利用内嵌于Auto-CAD的Visual LISP语言，对划分后的数据文件进行操作，实现了通信指挥车的单元网格显示，通过可视化对象直观地判断网格划分是否满足矩量法的基本要求，并及时进行纠错处理，最后给出了采用该算法对通信指挥车进行三角形、矩形网格划分后的实例显示。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。