平面三角

The influences of the wave vectors off the periodic plane on the distribution of energy bands of triangular,honeycomb and square lattices are analyzed by plane wave method .

利用平面波法分析了由介电常数为13和1的两种介质分别构成圆形柱和背景组成的三角晶格、蜂巢状晶格和正方晶格，波矢偏离周期性平面对它们能带分布及应用的影响。

The minimum weight triangulation of a planar point set is a long-standing open problem in the fields of computational geometry and algorithm design.

平面点集的最小权三角剖分问题是计算几何和算法领域的一个长期悬而未决的公开问题。

Research on Triangulation Algorithm of Discrete Data on Plane Surface.

平面离散点集的不规则三角网自动生成算法的实现研究

The intersection of a composite triangular Bezier surface and a plane is another aspect of intersection study.

计算复合三角Bezier曲面与平面的交线是本文研究求交问题的另一个方面。

Power strap wheel and working strap wheel must be fixed in the same plane, triangle strap should be in order, to confirm the machine running direction is the same as the mark.

电力肩带车轮和工作肩带车轮必须固定在同一平面，三角皮带应放置正确，以确认机器运行的方向是正确的。

There are relative fewer reports regarding the observation of the route of lumbar nerve root in intervertebral plane and triangle working area from thin section anatomy and CT section anatomy.

而从薄层断面解剖与CT断面解剖对腰神经根在椎间隙平面的行程和三角工作区进行观测的报告较少。

For a given ray and a complex scene including dense triangle meshes, this approach can cull most nonintersecting triangles by a simple rejection test that only involves triangle/plane intersection tests.

针对由稠密三角形网格组成的复杂场景，算法通过三角形和测试平面的相交判断剔除与投射光线不相交的绝大多数三角面片。

Ability to work with mathematical concepts such as probability and statistical inference, and fundamentals of plane and solid geometry and trigonometry.

具有应用数学理念如概率和统计推论、平面、立体几何和三角法。

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。

In this paper,the following transformations are introduced in computer aided planar composition:sectorial transformation triangular transformation,trigonometric function/triangular wave transformation, madulation transformation and spherical mirror reflection transformation.

该文探讨和总结了在计算机辅助平面构成中的5种特殊变换：扇形变换、三角形变换、三角函数／三角波变换、调制变换、球面镜反射变换。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。