tetrahedral

Only a fraction of the A ions are in tetrahedral sites.

只有一部分A离子处在四面体的位置上.

This paper exploits using advanced front technique to generate finite element mesh nodes, and using Delaunay triangulation technique to generate tetrahedral element.

本文用网格前沿技术逐层生成网格结点，并采用Delaunay三角剖分技术生成四面体网格单元。

An Algorithm Based on Advanced Front Technique for Automatic Generating Tetrahedral Element

一个基于网格前沿技术的三维实体四面体有限元网格剖分算法

With respect to the problem, a new 3-D FEM with tetrahedral element applied to the theory study of resistivity anomaly under complicated conditions is presented in this paper, and several typical geological models are selected.

针对这一实际工作中遇到的问题，运用四面体单元的三维有限元数值方法对复杂条件下的电阻率异常进行了理论研究，文中选用了几例典型地质模型。

When the formulasof the tetrahedral element are developed, triangular coordinates is used to develop the boundary integral part of outer boundary element.

其中针对四面体单元的第二、第三类边界条件采用面积坐标积分变换法详细推导了边界积分项的计算过程。

As a division to tetrahedral element to the cube in the area of whole division, each cube is divided into five tetrahedron profile, so as to construct a three dimensional space finite element model.

以四面体作为剖分单元，对正方体整体区域进行剖分，每个正方体剖分为五个四面体，从而建立三维空间有限元模型。

According to analysis observed absorption spectra of Fe~ ( 2+) ion in the Cs_3FeCl_5 crystal, the present article has suggested that Fe~ ( 2+) ion is located at distorted tetrahedral C_2, lower symmetry crystal site in the Cs_3FeCl_5 crystal.

由分析观测到的Cs3FeCl5晶体中Fe~（2+）的吸收谱出发，本文假设Fe~（2+）离子处于畸变的四面体C2，低对称晶位。

Cytokinesis was simultaneous and the arrangement of microspores in the tetrad was tetrahedral.

胞质分裂为同时型,四分体中小孢子排列呈正四面体形.

In chapter 3, the 2~ ( nd) tetrahedral element was used in FEM to enhance numerical accuracy and computational efficiency.

第三章从采用二次单元的角度出发，探索了提高脑电正问题有限元方法的计算精度和计算效率；

Tetrahedral hybrid orbital Stray Current of UMT and Rail Insulation Test

城市轨道交通杂散电流及轨道对地绝缘测试

The two-dimensional structural units ( such as silicon-oxygen tetrahedral sheet, octahedral sheet), interlayer space ( or interlayer matter) are assembled according to the sphere close packing manner, and the close packing layers parallel to { 0001}.

结果表明，不同二维结构单元体（包括硅氧四面体片、八面体片、层间域（物））的构筑基本符合球体紧密堆积原理，紧密堆积层平行{0001}；

There are several mechanisms to release the difference in size while the silicon-oxygen tetrahedral sheet and octahedral sheet assemble the TO and TOT-type structural layers.

四面体片与八面体片构筑TO和TOT结构层时采取多种机制消除二者在二维尺寸上的差异；

FEA on Surface Shot Peening to Strengthen Railway Vehicle Bodywork; tetrahedral element characteristic

车体钢结构表面喷丸强化有限元分析四面体单元体的特征

The two banana bonds start out from each carbon at roughly the tetrahedral angle.

这两个香蕉键是从每个碳原子以接近四面体角发出的.

An algorithm for generating three-dimensional tetrahedral mesh for simulation of brain deformation is presented.

本文提出了一种用于模拟脑组织变形的三维四面体网格划分算法.

Automatic generation algorithm of tetrahedral element mesh for considering movement free groundwater table

潜水面变动的空间四面体单元网格自动生成方法

Secondly, the 2-D triangle element, 3-D tetrahedral constant-strain element, 3-D hexahedral constant-parameter element dynamic consolidation finite element programs were compiled, and then verified by small examples respectively.

其次编写了二维三角形单元、三维四面体常应变单元和三维六面体等参数单元的动力固结程序，并通过算例对它们进行了验证。

The convergence of tetrahedral isoparametric element is analysed in this paper, and the optimal H~ 1 error estimate is obtained, then it is used to solve 3-dimensional 2-order homogeneous Dirichlet problem on surface domain.

本文的主要内容是讨论了四面体等参元，分析了其收敛性并给出了最优H~1误差估计，并把它应用到曲面区域的三维2阶齐次Dirichlet问题。

The molecular structure is almost identical to tetrahedral chlorine.

与四面体的氯有着几乎一样的分子结构.

3-D resistivity FEM numerical modeling based on tetrahedral element division under complicated terrain

复杂地形条件下四面体剖分电阻率三维有限元数值模拟

Serpentine minerals are typical Mg-rich layer silicate minerals, and they consist of a silicate tetrahedral sheet and a brucite-like magnesium octahedral sheet.

蛇纹石是一种天然的由硅氧四面体晶片和氢氧镁八面体晶片结合而成的层状含镁硅酸盐矿物。

The pillar density is relative to the AlO_4 amount in tetrahedral sheet if the saponite is pillared with Al_ ( 13).

用Al（13）交联皂石时，交联密度与四面体片上AlO4的量相关；

Solid state equivalent orbit with tetrahedral structure and doubie group classification of spin-orbit coupling for energy states

四面体结构的固态等价轨道和能态的自旋&轨道耦合双群分类

Each discrete tetrahedral element gets four nodes and six edges.

离散得到的四面体单元有四个节点和六个棱边。

In this paper, a general method of three dimensional vector potential solution for nonlinear magnetostatic field problem by means of the finite tetrahedral element method is presented.

本文给出了用有限四面体单元计算三维非线性恒定磁场的一般过程。

And in Mg-Cr2+ spinels, Cr2+ oc-cupied the tetrahedral site.

在尖晶石中，Cr2+占置四面体位置。

The nature of the molecular orbitals and the electronic structure suggest that the tetrahedral [ WO4] site with single bridge oxygen is the most probable active center responsible for methane activation.

以单个桥氧担载的[WO4]四面体是最可能的甲烷活化中心。

Chapter 3 introduces the variable time-step scheme in combination with solution-mesh refinement on unstructured tetrahedral mesh.

第三章介绍结合变时 步法 之非结构性可调适四面体网格.

Cytokinesis is of the simultaneous type and microspore tetrads are mainly tetrahedral.

小孢子母细胞减数分裂为同时型.

In 1987, Barton and Cendes applied the tetrahedral element to three-dimensional magnetic calculation.

80年代初期,Bossavit和 Verite将 四面体棱边元应用于三维涡流问题,1987年, Barton和Cendes将 四面体棱边元首次应用于三维磁场计算揭开了基于棱边的有限元方法在电磁问题中应用的序幕.