Three algorithms are presented for computing the shortest path between two arbitrary points on a polyhedral surface: One is an approximate algorithm; the other two can obtain the shortest path or an approximately shortest path.
提出计算多面体面上任意两点之间最短路径的算法:近似算法、最短路径或近似最短路径算法。
Research of Measuring Polygon with Three-Position Comparing Method on Index Table with Serrated Teeth;
在多齿分度台上用三位置比较法检定多面棱体的研究
A discussion is presented on the error compensation of the reflecting planes of polygons in accurate angular measurement using autocollimator and polygons.
讨论了利用多面棱体和自准直仪进行精密角度检定时多面棱体工作面偏差的补偿问题,给出了工作面偏差补偿符号的判定方法。
The small angles realization method of differentiating two different indexing tables,between an indexing table and a polygon,is expounded.
介绍了目前常使用的正多面棱体和多齿分度台 ,阐述了它们之间如何实现基准小角度的方法 ,最后介绍了一个用 2 3面棱体和 36 0齿盘差分出小角度 1°/ 2 3,测量感应同步器的测角系统每 1°内 2 3点的角位置误差的方
Quick modeling method development for polyhedron-based space structures;
多面体模型的新型空间结构快速建模方法研究
DEXEL model of polyhedrons and boolean operations;
多面体三向DEXEL模型与布尔运算
Contacting condition analysis used in collision detection of polyhedron;
多面体干涉检测中的接触状态判定法
In the back part, the possible regular polyhedrons with the point groups' symmetry is discussed.
第一类和第二类晶体点群共有32种[1],但为什么不会有其它的存在,以及这些点群和全旋转群SO（3）,正交群O（3）的生成关系还没有相关论述,本文从群的生成关系出发,解释为什么点群只有那么多,这些点群和全旋转群SO（3）,正交群O（3）的关系,以及可能具有点群对称性的正多面体结构。
The structure of the regular polyhedron was analyzed.
分析了正多面体结构的特点,通过研究正多面体外接球与特征基本体———棱锥的参数关系,应用特征复制原理,介绍了在Solidworks环境下进行正多面体三维建模的方法。
Using the divisible theory of the integer,the underside conclusion is proved:for all the vertex-coloring formulas of the regular polyhedron,let be any integer,the result of these formulas is still the integer.
利用整数的整除理论,证明了以下结论:在所有正多面体顶点着色公式中,当颜色数取任何一个整数时,这些公式的计算结果仍然是整数。
Mutual Check of Angular Deviation for Polygonal Prism and Angle Dividing Table
多面棱体和多齿分度台角分度误差的互检
A solid figure whose bases or ends have the same size and shape and are parallel to one another, and each of whose sides is a parallelogram.
棱柱（体），角柱（体）多面固体，上下两底面大
To replace(the edge of a crystal) with a plane face.
把晶体的棱截成平面
Three such arrangements come to mind: a planar hexagon, similar to the benzene ring, and two solid polyhedra, the trigonal prism and the octahedron.
故而,有三种排列方式：平面六边形,类似苯环；两个立体多面体：三棱柱和八面体,
a prism whose bases are parallelograms.
底面都是平行四面体的棱柱。
A solid figure with a polygonal base and triangular faces that meet at a common point.
棱锥多面形的底痤和三角形的侧面在一个共同点处相接的固体的轮廓
on Deviation Angle of Retlected Beam in Quasi-tetrahedroid Corner Cube Prism
准四面直角体棱镜出射线偏角的研究
Repeat the features of the faces, edges and points of a cuboid.
师：复述长方体面、棱、顶点的特征。
How many edges does a cuboid have ? Count, please.
师：长方体有多少条棱？数数看。
A Many-faceted Mirror in the Ming Society--Analysing Two Druggist in Jin Ping Mei;
明代社会的一面多棱镜——《金瓶梅》中二药商析
He used a three-sided piece of glass called a prism.
他使用的是一种三面玻璃体，称为三棱镜。
Variation in flow pattem with unit width discharge in the prism canal with trapezia section
梯形断面棱柱体渠道水流流态规律研究
A prismatoid having polygons with the same number of sides as bases, and faces that are parallelograms or trapezoids.
平截头棱椎体以边数相同的平面多边形为底面的，各侧面为平行四边形或不规则四边形的拟柱体
Genetic Analysis and Gene Mapping of a Poly-row-and-branched Spike Mutant in Barley;
大麦多棱分枝突变体的遗传分析和基因定位
longitudinal coefficient
船体)棱形系数船体棱)棱形系数圆柱形系数
A Shining Multi-faceted Prism: An Exploration of the Polysemical Narrative Strategies in Heart of Darkness
面面发光的多棱镜——论《黑暗的心脏》的复义叙事策略
a parallelepiped bounded by six similar faces (either rhombuses or parallelograms).
有六个面的平行四面体（或是棱形的或是平行四边形的）。
a prism whose bases are quadrangles.
底面是四面形的棱柱。
