十二面体的

The hexagonal structure as well as the icosahedral chain in it has been determined by the electron crystallographic analysis.

用电子晶体学方法测定υ-AlCrFe的六角结构及其中的二十面体链。

Any of a group of viruses containing DNA in an icosahedral protein shell and causing disease in dogs and cattle; not known to be associated with any human disease.

有二十面体蛋白质外壳包含DNA能引起狗和牛疾病的一组病毒；还没发现与人类的人和疾病有关。

By means of pair analysis technique and bond orientational order, we find that there exist a number of icosahedral short range units in the system.

Frank犤1犦认为，在强过冷状态下形成金属玻璃的能力与体系的二十面体短程有序密切相关，这已成为体系特有的一大特征。

The results indicate that almost icosahedral quasicrystals were formed in a certain length, the longest quasicrystal sample can reach up to 40 mm.

结果表明，这些样品在一定长度范围内都形成了近单一的二十面体准晶相，最长的准晶样品达到40mm。

Any of a group of small viruses that contain DNA in an icosahedral protein shell and cause disease in many vertebrates, especially mammals such as dogs and cattle.

小脱氧核糖核酸病毒一类在二十面体蛋白外壳中含有脱氧核糖核酸的小病毒中的任一种，在许多脊椎动物，尤其是狗和牛等哺乳动物中引起疾病

Prepared using openGL through Icosahedron be split with the texture of the ball.

详细说明：用openGL编写，通过分割二十面体得到的带有纹理的球体。

On the basis of on the analysis of current spherical spatial data structure, the clew of the spherical spatial basal subdivision mode which uses Snyder equal area projection on the truncated icosahedron DGG is discussed, and then global multi-resolution overlay is obtained by subdividing hierarchically on the initial projection plane according to the hexagonal grid.

在分析当前球面空间数据结构的基础上，讨论了利用Snyder等积投影在二十面体上建立球面空间基础剖分方式的思路，然后在初始投影面上采用六边形格网进行层次细分，获得多分辨率的全球铺盖。

The results of XRD (X-ray diffraction), SEM show that the Al-Cu-Fe quasicrystalline coating is dense and uniform, by preparing from Al70Cu20Fe10 powders with particle size of 325 mesh (4.5μm). After annealing under vacuum condition of 800℃ for 2 hours, it is observed that the icosahedron phase is the major phase together with a few β-Al phase.

由X-射线衍射XRD(X-Ray Diffraction)、扫描电镜SEM分析得出：采用原子比为A170Cu20Fe10、粒度为-325目的粉末制备的涂层，在800℃下真空退火处理2h后，结构均匀致密，二十面体准晶相含量高，并只含有少量的β相。

The lecture contains 12 chapters for 2 semesters and includes information of materials basic features and properties such as Crystallography, Motion state of electrons in solids, Crystal structure, Semi-crystals and non-crystals, Phase diagram, Point defects and line defects, Plane defects and volume defects, Diffusion, as well as the basic principles of materials processing such as Solidification, Deformation and recrystallization, Solid transformation.

授课内容分十二章；涉及材料最基本的性质和特征（晶体学基础，固体材料中电子运动状态，晶体结构，非晶态与半晶态，相图、晶体中的点缺陷与线缺陷、面缺陷与体缺陷、扩散）以及材料成形过程涉及的基本原理（凝固、形变与再结晶、固态相变等）。

We found the most stable structures of Al13 and Al-13 icosahedrons, while the ground-state structure of Al+13 is other structure.

中性团簇和负离子团簇的基态结构是稍微有些变形的二十面体结构，正离子团簇是另外的结构。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐