tetrahedron

noun

1. 四面体
   a solid shape with four flat sides that are triangles

1. The calculation accuracy and the calculation efficiency of hexahedron mesh generated by author are higher than tetrahedron element.
   所剖分的六面体单元的－算精度和计算效率都高于四面体单元。
2. This amazing organic Light material forms as a star tetrahedron ( see FIGURE 8) that constantly spins and rotates on its six major axis points.
   这令人惊奇的器官光材料形态如同一星四面体（看图8），它以六个主轴点不断旋转。
3. Play method: the tetrahedron triangle module toy reverses without barrier.
   玩法：四面三角体模块玩具无障碍翻转。
4. This bond is polar, but again, as I alluded to earlier, because the carbon is centered in the tetrahedron, because of the sp3 hybridization, the molecule itself is symmetric and nonpolar.
   这个键是非极性的，但是，我们断言过早，因为C是中心原子，由于sp3杂化，这个分子本身是非极性的且对称的。
5. A kind of complete automatic subdivision method for mesh of hexahedron based on quadratic subdivision of tetrahedron was put forward and the corresponding program was developed.
   提出了一种基于四面体二次剖分的六面体网格全自动剖分方法，研制了相应的程序。
6. The triangle and tetrahedron optimization methods were developed for the selection of back-ground electrolyte ( BGE) in capillary zone electrophoresis ( CZE).
   建立了两种高效、快速的毛细管区带电泳背景电解质（BGE）的优化方法三角形优化法和四面体优化法。
7. By boundary attraction the mesh boundary approached the domain boundary and inner-domain boundary, the spring and equilateral tetrahedron approach method optimized the mesh structure effectually.
   其中，边界引力有效解决了流场边界恢复和内嵌边界问题，弹簧振子和正四面体趋进技术有效调整网格结构并提高网格质量。
8. Productivity system is a dynamic "tetrahedron" in an abstract term.
   生产力系统抽象地看是一个处于动态的四面体；
9. 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。
10. The tetrahedron triangle module is a solid module with four planes;
    四面三角体模块是有四个平面的立体模块；
11. The utility model relates to a tetrahedron triangle module toy which is formed by at least six tetrahedron triangle modules in a jointing combination way.
    四面三角体模块玩具由至少六个四面三角体模块连体组合而成。
12. An algorithm for tetrahedron mesh that can approach to the conicoid boundary during the refined process was presented.
    本文介绍了一种在四面体单元网格的加密过程中实现曲面逼近的算法。
13. And so now I have hydrogens at the four corners of a tetrahedron.
    放在碳正四面体，的四个角上。
14. The valence-band offsets of such systems are calculated by frozen potential method and their Joint density of states has been computed by tetrahedron method.
    在此基础上，用冻结势方法计算了该超晶格系统的价带带阶；用四面体方法计算了该系统的联合态密度。
15. A Recursively Configured Interconnection Network ── Regular Tetrahedron Recursive Network
    一种递归构造的互连网络&正四面体递归网络
16. In addition, the third strand in each of the six helices connects to ( and continually weaves patterns of Light around) the central core of the star tetrahedron.
    此外，在每一个六螺旋状物的第三条连接到（光围绕的不断波动模式）星四面体中心。
17. A tetrahedron with four equilateral triangular faces.
    有四个等边三角形面的四面体。
18. The most likely alternative structure, the tetrahedron, would produce only one isomer for this composition.
    在这种情况下，最可选的结构是四面体，并且对于这个化合物将只产生一个异构体。
19. Each tetrahedron shares two of its oxygens with neighboring tetrahedra.
    每个四面体都有两个氧原子是与其相邻的两个四面体共用的。
20. Reconstruction of 3D Complex Geological Bodies Based on Tetrahedron Mesh
    基于四面体格网的3维复杂地质体重构
21. Now you are equipped for the development of the magical RNA/ DNA star tetrahedron!
    现在你为不可思议的RNA/DNA星四面体整装好！
22. We can now use tetrahedron and hexahedron elements in three-dimensional stress analysis.
    我们现在在三维应力分析中采用四面体单元和六面体单元。
23. Influence of MoO_4~ ( 2-) tetrahedron on growth of prismatic faces of KDP single crystal
    MoO4~（2-）四面体对KDP晶体柱面生长的影响
24. Here, a special series of vortices, created by the constant gyrations of the different elements in the star tetrahedron, makes this acquisition possible.
    这里，一特别的旋涡，由在星四面体不同元素持续不断的旋转所创造，使这获得变为可能。
25. The particle in the fly ash of low calcium is the silicon oxygen tetrahedron structure, one's own activation is very low.
    低钙粉煤灰中的微粒为硅氧四面体结构，自身的活性很低。
26. So, this forms a tetrahedron, which forms the sp3 hybrid orbitals.
    这就形成了一个四面体，它是由sp3杂化轨道形成的。
27. Firstly, hexahedron cells in data field of point cloud were divided into tetrahedron cells.
    然后据此逐步将点定位到数据场中四面体单元内；
28. Several stacking faults and a tetrahedron composed of two stacking faults in triangular were observed within the crystal.
    在晶体中观察到多个层错和一个由两个层错三角形组成的层错四面体。
29. Base grid is used to accelerate the generation of tetrahedron mesh.
    在网格生成过程中，运用背景网格加快了四面体网格的生成速度；
30. The silica-alumina framework in vitreous body exists not in reticular structure but in double tetrahedron island structure.
    玻璃体中的硅铝骨架并不是处于网状结构中，而是处于双四面体岛状结构中；

noun

1. any polyhedron having four plane faces