平面三角形

着重就平面三角形与球面三角形的有关概念、公式作一系统的整理、概括和比较，从而指出其异同以及相互之间的联系。

This paper lays stress on making systematic arrangement , summary and comparison for the concept and formula relating to plane triangle and spherical triangle so as to point out the difference , similarity and interconnection between them .

实现了基于平面三角形上的RWG基函数的多分辨基函数与伽略金匹配法。

The MR basis function based on the RWG basis function defined on the planar triangle and its Galerkin Method are successfully realized .

改进的Allman无零能模式平面三角形单元

The Allman 's Element Without the Spurious Zero Energy Mode

文中首先利用边界元方法对Helmholtz积分方程进行离散化，其中采用了线性插值的平面三角形单元和四边形单元，每个单元上的表面积分采用二维高斯积分。

In this paper , the Helmholtz integral surface is replaced by a number of interconnected flat triangular elements and flat quadrilateral elements with linear plotted function . The element surface integration is performed by means of two-dimensional Gaussion quadrature .

一个简洁有效的带旋转自由度的平面三角形单元

A simple and effective triangular element with rotating degree of freedom

平面三角形单元有限元差分法

The Finite Element Difference Method on Plain Triangular Element

有限元平面三角形网格自动划分

Automatic Generation of Finite Element Planar Triangular Meshes

一个平面三角形网格的多目标优化算法

Multiobjective Optimization Algorithm for Triangular Plane Meshes

任意平面三角形自动剖分新方法

Automatic Division Method of Any Planar Triangle

利用平面三角形的正弦定理，提出一种已知准确船位后的单物标两方位移线定位的计算方法。

This paper presents a method of calculating a running fix with two bearings form one object .

选定平面三角形基函数作为型函数，确定了单元方程和单元矩阵；

The triangle base function was selected as shape function , and cell equation and cell matrix were constructed .

一价铜的配位数一般为2、3或者4，常见的配位构型包括直线型、平面三角形、四面体构型等。

The usual coordination geometries of CuI center are line , planar trigon or tetrahedron with the coordination number from 2 to 4 .

此算法与平面三角形解法的4种标准子程序合用，可以解决一些平面复杂机构的运动分析问题。

The algorithm with four standard subprograms for planar triangle solution can be used to solve the kinematic analysis problem of some planar complex mechanisms .

硫脲作为电中性物质，其平面三角形的极性氢键可作阴离子的识别位点。

The hydrogen bond on the complanate triangle structure of thiourea , a kind of neutrality substance , can be the identification point to anion .

该法在行波法生成平面三角形网格的基础上，将一个三角形单元分解为三个四边形单元。

Based on the advancing front technique developed for triangular mesh generation , quadrilateral mesh can be generated by dividing each triangular element into three quadrilateral elements .

通过实例对平面三角形单元、平面四边形单元、板料成形中的壳单元进行节点编号优化，以验证该算法的有效性和优越性。

The algorithm is suitable for triangle element and shell element of sheet metal forming by taking some examples , it validates the validity and advantage of the algorithm .

由单元间弱连续条件建立了带调整参数的常应变矩阵，改进了带旋转自由度的平面三角形单元（Alman单元）。

A constant strain matrix with adjusted parameter is established from weak continuous conditions between elements , which resulted in an improvement of plane triangular element ( Allman element ) with drilling degrees .

基于平面三角形有限元网格，探讨了岩石块体系统数值流形方法分析之数学覆盖和物理覆盖及其流形元分析网格的形成技术，研究了覆盖系统两套覆盖编号的自动形成方法。

It is one kind of methods for the discontinuous deformation analysis in the rock engineering . It is success to discuss the process of a finite element mesh transforms to a cover system for the numerical manifold method .

本文首先推导了用于索膜结构分析的几何非线性有限元基本列式及基于修正的拉格朗日坐标的两节点直杆索单元和平面三角形常应变膜单元的几何非线性增量理论。

The formulation of geometrical non-linear finite element is deduced for analyzing cable-membrane structure . Then the incremental theory of geometrical nonlinearity of linear cable element and plane triangular membrane element on the basis of updated lagrange coordinate are obtained .

在多元的情形，以平面上三角形域为示范，构造了n维单纯形上的Haar及Walsh系统。

We also discuss the Haar and Walsh systems on a triangular domain in the plan , or more generally , on a simplex in n-dimensionaL space .

任意平面区域三角形网格的全自动生成算法

Automatic triangular mesh generation algorithm for arbitrarily shaped planar regions

平面映射三角形棋盘格子的容量维伊辛模型

Fractal Ising model of plane mapped triangle chessboard lattice

平面区域三角形网格自动生成

Automatic triangular mesh generation for planar regions

用平面直角三角形计算工具测量与水平面或者基准面成直角。

To measure by using trigonometry . at right angles to the plane of the horizon or a base line .

它是利用平面任意三角形的三点固定可使平面稳固的原理实现的。

The utility model is realized by the utilization of a principle that three points of any triangle in a plane are fixed to cause the plane to be steady .

主楼的平面是三角形，其边和基地的边有一定的角度，这样做的目的是最大限度地使用基地，并在安静的角落创造了一个入口院子，模仿传统中国庭院的入口院子。

The rotated triangular tower maximizes the use of the site and creates an entry courtyard along the quieter side which is entered through a symbolic gateway recalling traditional Chinese courtyards .

基于Delaunay三角化方法，给出了内部带有任意复杂特征约束的任意平面域的三角形网格生成方法。

Based on Delaunay triangulation an algorithm is presented for generation triangle mesh over any planar domain which have complicated characteristic constraints .

将平面上关于三角形中三条线共点问题的Ceva定理，推广到n维欧氏空间E~n中关于单形的n＋1个n－l维超平面的共点问题。

The Ceva 's theorem concerning the concurrent problem of three lines in a triangle is extended to that of ( n + 1 ) ( n-1 ) - dimensional hyperplanes of simplex in the n-dimensional Euclidean E ~ n.

本文借助于文[5]给出的一种矩阵广义逆，构造了二元Stieltjes型矩阵连分式的截断连分式，以此首次定义了平面上拟三角形网格上的二元矩阵有理插道值函数。

In this paper , the convergences of bivariate Stieltjes type matrix valued continued fractions are constructed by means of a generalized inverse for a matrix , which was given in paper [ 5 ] .

任意平面域的三角形网格和混合网格生成

An Efficient Triangular and Hybrid Grid Generator for Arbitrary Planar Domains