Stable icosahedral Zn_(60)Mg_(30)Y_(10) quasicrystals was prepared by as-cast method.
实验结果发现:Mg Zn Y三元合金在室温冷却过程中,准晶相直接从液相形核、长大;当合金成分为Mg74Zn25Y1时,凝固组织为MgZn基体相、析出相为α Mg固溶体及二十面体Mg30Zn60Y10准晶相;当x(Y)为2%、3%时,合金中出现共析组织。
It showsthat the regular icosahedron should be the optimum shape of replacement for the biggest ball intumbling mills.
结果表明，正二十面体是取代大球的优选形状。
The shape of Brillouin zone of body-centered cubic crystal is not normal dodecahedron;
体心立方晶格的布里渊区形状不是正十二面体
The paper analyzes the spherical triangle units getting from spherical triangle subdivision based on octahedron and icosahedron.
文章通过对基于正八面体和正二十面体球面剖分获得的球面三角单元进行分析,分析结果表明随着剖分层次的增加单元面积和形状变化趋于稳定,基于正二十面体的球面剖分与基于正八面体相比有更好的相似性;单元的变形程度与其到正多面体顶点的距离成负相关,而周长和面积变化成正相关;单元各属性比值所占的百分比与剖分层次无关,其较大峰值都分布在正多面体的顶点附近。
EARP supports several Plato polyhedrons, including tetrahedron, octahedron and icosahedron, and arbitary Voronoi spherical tessellations.
设计一种面向球面三角形的新的投影———等角比投影(EqualAngleRatioProjection,EARP),该投影包括平行以及同轴两种模式,支持正六面体、正八面体、正二十面体等柏拉图立体(PlatoPolyhedron)[1～3]以及任意Voronoi球面三角剖分。
tetrahedral pentagonal dodecahedro
四面体式五角十二面体
a dodecahedron with twelve regular pentagons as faces.
有十二个正五角形面的十二面体。
Virus Spreading Algorithm for Direct Displacement Solution of Dodecahedron Variable Geometry Truss Manipulator
十二面体变几何桁架位置正解的病毒传播算法
Synthesis of Mesoporous Silica Single Crystal of Rhombic Dodecahedron Using Tri-head Group Quarternary Ammonium Cationic Surfactant
三头季铵盐阳离子表面活性剂合成菱形十二面体介孔二氧化硅单晶
A polyhedron having20faces.
二十面体有二十个平面的多面体
any polyhedron having twenty plane faces.
任何有二十个面的多面体。
any polyhedron having twelve plane faces.
任何有十二个面的多面体。
The capsids of nearly all spherical viruses adopt icosahedral symmetry.
球状病毒衣壳采用二十面体对称。
The Research of Al-Mn Alloys of Icosahedral Structure;
Al-Mn二十面体准晶的相变研究
Icosahedral Short-Range Order Within Al-Fe-Ce Alloy
Al-Fe-Ce非晶合金中的二十面体短程序
The last of these figures known to Plato is the icosahedron.
柏拉图知道的最后一个这种构形是正二十面体。
Thermodynamic Parameters of Capsid Self-Asssembly for Icosahedral Virus;
二十面体病毒衣壳自组装的热力学参数
Thoughts on the Reform of College P. T . Course in the 21 st Century;
面向二十一世纪高校体育课程改革的基本思路
Research on the Mg-Zn-Nd System Master Alloy Containing Icosahedral Quasicrystal Phase
含二十面体准晶相的Mg-Zn-Nd系中间合金的研究
Progress of Simulating Construction for the Structure of Icosahedral Virus Capsids
模拟构筑二十面体病毒衣壳结构的研究进展
A 12-Node Hexahedral Generalized Conforming Element for 3-D Analysis of Thin-Walled Beams
薄壁梁空间分析的六面体十二结点广义协调元
Formation of an icosahedral diamond crystal and its computer simulation
正二十面体金刚石的形成及其计算机模拟
The altar hearth is square, twelve cubits long and twelve cubits wide.
16供台长十二肘，宽十二肘，四面见方。