tetrahedral formula

On the basis of Flow Intelligent Model (FIM) conception from Gu Zheng-hua and Tang Hong-wu, penetrating frame-tetrahedrons wake field was simulated through artificial neural networks method, and a new idea was provided on flow fields simulation.

基于作者提出的水流智能模型思想,运用人工神经网络方法对透水框架式四面体的尾流场进行智能模拟,为复杂水流的空间流场仿真提供一种新的研究途径。

With a variational method and a modified arrangmement channel quantum mechanics(MACQM) method,the energies of a equilateral triangle H-3 and a tetrahedron H-4 system are calculated.

采用改进排列通道量子力学(Modified Arrangement Channel Quantum Mechanics,简称MACQM)方法和变分法,计算了H3体系正三角形和H4体系的正四面体结构的能量曲线。

Some of the cross sections are used to stand for a centain component, and semiternary phase diagrams are ploted, then a quaternary phase diagram shown in a tetrahedron is obtained.

提出了利用正四面体的某些截面表示一定组成，得出相分离曲线和相分离曲面，并能较好地描述四元体系。

An effective method of constructing geological model by using tetrahedron;

一种有效的四面体体元构建地质体模型的方法

A New Generation Tetrahedron Mesh Technique of Complex Mining Geological Bodies;

面向矿区复杂地质体的四面体生成算法

By amending the auxiliary geometric primitive,diagonal,of generalized tri-prism(GTP) into tetrahedron,the inconsistentness of data organization and of geometric primitive in real 3D geosciences modeling as well as the geometric interstice in spatial operation were solved.

将广义三棱柱(GTP)的辅助几何要素———对角线———修正为四面体,解决了R3DGM(真三维地学模型)中数据组织与几何要素的不一致和空间操作中的几何裂缝问题。

tetrahedral pentagonal dodecahedro

四面体式五角十二面体

The Oppenheim--Mordell Inequalities in a Tetrahedron;

四面体中的Oppenheim型不等式

Some Geometric Inequalities on the Bisection Planes of the Dihedral Angles of a Tetrahedra;

关于四面体二面角平分面的几何不等式

On Finsler-Hadwiger Type Inequality for Tetrahedron;

关于四面体的Finsler—Hadwiger不等式

In this article, we introduce the oriented volume concept of simple tetrahedral, and get the computation formula for polyhedron at last.

引入了简单四面体的有向体积概念,最后得多面体体积计算公式.

A Vector Invariant on Tetrahedron And Its Deductions;

关于四面体的一个向量恒等式及其推论

any polyhedron having four plane faces.

任何有四个面的多面体。

tetrahedral element characteristic

四面体单元体的特征

four-cup automatic sphere lapping machine

四杯式自动球面研磨机

a tetrahedron with four equilateral triangular faces.

有四个等边三角形面的四面体。

defect tetrahedral phase

有缺陷的四面体晶相

tetrahedral hybrid orbital

正四面体杂化轨函数

Influence of MoO_4~(2-) tetrahedron on growth of prismatic faces of KDP single crystal

MoO_4~(2-)四面体对KDP晶体柱面生长的影响

By an analytic method, in this essay a vector invariant of a casual point to a tetrahedron on volume and deductions form vector invariant are given.

利用解析法，给出空间任意一点与四面体体积有关的一个向量恒等式，并给出若干推论。

a polyhedron whose faces are trapeziums.

由不等边四边形面组成的多面体。

a prism whose bases are parallelograms.

底面都是平行四面体的棱柱。

Every one had four faces and every one had four wings; and hands like a man's hands were under their wings.

各有四个脸面，四个翅膀，翅膀以下有人手的样式。

Practice and Analysis of Four Sections Types Physical Education Teaching Mode;

“四段式”体育教学模式实践与分析