A series of convenient methods for the preparation of the paper-folded regular octahedron, regular tetrahedron, and regular cubic cone are presented here.
介绍纸折正四面体、正八面体和正方锥形的简易制作方法，并推广应用于制作天然硅盐的多种复杂阴离子结构及某些多酸阴离子结构的模型。
Research of Global Remote Sensing Image Browser System Based on Octahedron Discrete Global Grids Model
基于正八面体球面离散格网模型的全球遥感影像浏览系统研究
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。
In this paper,we consider the case of the dice made by octahedrons.
该文考虑用正八面体来做骰子,证明了恰有4对正八面体骰子有相同的投掷效果。
Further,by which other corresponding element bodies can be derived,in which well known isoclinal octahedron and orthogonal octahedron are two important characteristic element bodies,thus a generalized octahedral element system is formed.
在真三轴应力状态下,根据不同材料的破坏(屈服)面特征,依次采用三组破坏面对正六面单元体进行截取,则可得到一系列八面单元体(特别是岩土),亦即广义八面体,并进而可派生出其他相应的单元体,而已知的等倾八面体和双剪理论中的正交八面体则是其中的2类特征过渡单元体,由此构成了一个广义八面体单元体系。
The cycle sum of the rotation group of the octahedron was calculated.
正八面体的旋转群的循环和已算出。
Research of Global Remote Sensing Image Browser System Based on Octahedron Discrete Global Grids Model
基于正八面体球面离散格网模型的全球遥感影像浏览系统研究
SYNTHESIS OF OCTAHEDRON AND HEXAGONAL Fe_3O_4 NANO-PARTICLES VIA WEAKLY MAGNETIC FIELD-ASSISTED OXIDATIVE-COPRECIPITATION
弱磁场辅助氧化共沉淀法合成正八面体和六方体型Fe_3O_4纳米颗粒
an octahedron with eight equilateral triangles as faces.
有八个正三角形面的八面体。
A polyhedron with eight plane surfaces.
八面体有八个面的多面体
any polyhedron having eight plane faces.
任何有八个面的多面体。
octahedral shearing-stress plasticity condition
八面体剪应力塑性条件
A solid figure having24equal faces, every three of which correspond to one face of an octahedron.
三八面体具有24个面等面、每三个相面对应于八面体的一个面的固体圆形
the mesial plane
(动物体的)正中面
Hydrothermal preparation of octahedral spinel ferrites
八面体尖晶石型铁氧体的水热法制备
Channel Sand Body Description Method and its Application in Bamianhe Area
八面河地区河道砂体描述方法与应用
He had a sense that life was closing in on him
他觉得生活正从四面八方向他压挤过来。
The cities are suddenly racing off in every direction.
城市正在突然迅速地向四面八方扩展开来。
and the solemn ignorance they were inflated with was breath to her nostrils.
里面一本正经的胡说八道简直成了她的命根子。
The Prime Minister was at that time being attacked left and right for his views.
那时，首相正因他的观点而受到四面八方的攻击。
A Thorough Interpretation of "8 Honors and 8 Shames" Helping Postgraduates with the Constraction of Personal Character--Achieve the Full Development of Talent in Universities;
全面解读“八荣八耻” 引领研究生人格塑造——真正实现高校人才的全面发展
tetrahedral hybrid orbital
正四面体杂化轨函数
s-regular Dihedral Coverings of the Heawood;
Heawood的s-正则二面体覆盖