三角点

Some kinds of data analysis and statistics methods, including principle factor analysis, factor loading analysis and dicrimination function, ternary diagram, scatter diagram are used to determine the material source of one piston core DGKS 9617 recovered from the northern part of the East China Sea and one bore core EA01 from the northeast part of the East China Sea.

中文摘要：采用数理统计（包括主成分分析、因子得分分析和判别函数），微量元素比值三角图和二维散点图，运用综合分析判别的方法判断东海北部柱样DGKS9617和东海东北部钻孔EA01物质来源。

Then, the skull polygon model is sampled to obtain representative scattered point set. The thin-plate spline interpolation technology is used to reconstruct it to gain surface model of titanium prosthesis.

然后，采样该三角网格模型获得代表性散乱点集，使用薄板样条插值技术重建得到钛板假体表面形状模型。

Cross section is a set of polygons and for this reason some relative algorithms for polygon are studied firstly. New algorithms for orientation and inclusion test for simple polygon are proposed. And Ghosh's convex hull algorithms for simple polygon and convex polygons, Subramanian's triangulation algorithm for arbitrary planar domain and O'Rourke's intersection algorithm for convex polygons are modified to make them more robust.

断层轮廓为简单多边形，首先对多边形的一些相关算法进行了研究，提出了一种判断简单多边形方向及点在多边形内外的新方法，改进了Subramanian的平面多连通域的三角划分方法、Ghosh的多边形的凸包及多个多边形的凸包算法和O'Rourke的凸多边形的求交算法。

To fulfill the need of the application of RP technique in medical domain, reverse CAD modeling from medical cross sections is systematically studied in this dissertation. Firstly, Some algorithms related to the research of this dissertation are studied. New algorithms for orientation and inclusion test for simple polygon, an error constrained automatic faring algorithm for B-spline curve and a theorem regarding the termination criterion for subdivision of triangular Bézier patch are proposed. Then based on similarity between contours of adjacent sections, a methodology for surface reconstruction from cross sections is presented. Finally, a virtual measuring method is proposed.

本文针对RP技术在医学领域应用的需要，系统研究了基于医学断层轮廓数据的反求CAD建模理论和方法：(1)在基础算法研究部分，提出了简单多边形方向及点在多边形内外判断的新方法、三角Bézier曲面片离散的误差控制定理和一种带误差约束的B样条曲线的自动光顺方法；(2)提出了一种基于相邻层轮廓相似性的医学断层轮廓数据曲面重构方法；(3)提出了一种称为"虚拟测量"的曲面模型处理方法。

You can see it more If you click the Double Triangles Buttonand then try the connections submenu.

你将看到更多当你点左下灰色三角键，然后试连接次菜单键。

The central peaks of several craters on the flanks of Syrtis Major are made up of an even more silica-rich rock, granite, that may have formed by extreme crystal separation or by large-scale remelting of earlier basalts.

在大三角侧面，几个火山口的中间尖点是由一种矽含量更高的岩石──花岗岩所构成，可能是经极度晶体分化，或早期玄武岩大範围重新熔融而形成。

The total amount of debt of 5 billion yuan of such residential projects in Shanghai Taisho Triangle Square, the recent high price of 471 million yuan to produce, and successfully found disk access unit.

总的债务金额为5亿元人民币的住宅项目，例如在上海大正三角广场，最近价格居高不下四万七千百点○○○万元生产，并成功地发现磁盘访问股。

We construct the algorithm of three-dimensions model surface reconstruction in three stages: first, we use Oct-tree to describe scatter data points in space, second find adjacent points and tangent plane and use the triangulation method to realize 3D surface reconstruction in the end, in research on algorithm of three dimensions model surface reconstruction based on scatter data points.

在"基于散乱数据三维表面算法的研究"这一章中，首先通过八叉树的数据结构的算法对三维散乱数据进行处理，然后再确定邻点和微切平面，最后用三角网格化的方法完成三维物体表面重构。

Go to your Swatches Panel, click on the little triangle in the top-right corner.

在Photoshop中展开色板面板，点击右上角的三角按钮。

The basic idea is calculating wavelet coefficients for each time series based on Haar wavelet transform. The first k coefficients are used to form a MBR. Thus, the point filtering method can be used. In addition, lower bounding and upper bounding features of each time series are calculated in advance, which are stored into index structure. Finally, triangle inequality pruning method is adopted by calculating the distance between time series beforehand.

基本的思想为首先运用Haar小波变换计算每个时序的小波系数，利用前面的k个小波系数形成一个最小边界矩阵，以利用点过滤方法；然后将预先计算每个时序的低边界特征和上边界特征存放到索引当中；最后采用三角不等式来修剪不相似的序列并确保没有漏报。

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。