十面体

Magic number CoGe10(superscript -), CoSn10(superscript -) and CoPb10(superscript -) may have bi-capped tetragonal antiprism structure and CoPb12(superscript -) is icosahedral structure.

幻数离子CoGe10、CoSn10和CoPb10可能具有双帽四角反棱柱结构，而CoPb12可能具有二十面体构型，钴原子均为笼状结构的中心。

Marine birnavirus, a member of the genus Aquabirnavirus, family Birnaviridae, is an unenveloped icosahedral virus with two genomes of double-stranded RNA.

海生双RNA病毒是类无囊膜、正二十面体、带有两节段双链RNA基因组的病毒，属于双RNA病毒科水生双RNA病毒属成员。

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。

Papovaviruses are also icosahedral symmetry viruses, but their capsid structures disobey the quasi-equivalence theory. Papovaviruse capsids are all composed of pentagons. Furthermore, these pentagons can not be connected directly, because there is a certain distance among them.

乳多空病毒尽管也是二十面体对称的病毒，但其衣壳结构违背了准等价原理，它们全是由五边形构建的几何实体，而且奇妙的是这些五边形不能直接拼接在一起，相互间存在一定的距离间隔。

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 biological characteristic of many vertebrate parvoviruses have been clarified, for example the genome organization, the structure of capsids protein of virus particle, and the relationship between the structure and its function.

它与其它细小病毒一样，病毒粒子无包膜，呈球状二十面体对称，直径22nm，基因组为单链线状DNA分子，含有五种结构蛋白，嶂螂浓核病毒基因组全长为5454个核昔酸，于C含量为38.13%。

Morphologically and biologically, the triple-layered rotavirus particles are composed of three protein capsids, outer capsid includes VP4 and VP7, the middle is VP6, and the core is composed of VP2. VP1, VP3 and the 11 segments of double-stranded genomic RNA.

完整的轮状病毒颗粒直径约70nm，为正二十面体结构，由三层蛋白壳包绕，外壳为VP4及VP7蛋白，VP6蛋白构成病毒第二层蛋白壳，最内层为核壳，由结构蛋白VP1、VP2、VP3组成，核壳内包含有11个分节段的病毒双链RNA基因片段。

Clearly, the larger the number of nucleation sites for a given amount of gold chloride in solution, the smaller will be the final size of each gold particle.

开始出现聚集，这个过程叫做成核现象，形成11个原子构成的中央二十面体金核。

Using atomic bond-type index method and cluster type index method, it has been found that during the microstructure transition processes the forming of icosahedra and its defective structures related to the increasing 1551 bond-type plays a remarkable role.

采用原子键型和原子团簇类型指数法，发现在其微观结构的转变过程中，与不断增加的1551键型密切相关的二十面体及其缺陷结构的形成起了非常突出的作用。

At last a single crystal of the ν-AlCrFe phase was found and the structure was determined by the combination of direct methods and high resolution electron microscopy. The structure contains a large quantity of slightly distorted icosahedra and the connection among them was analyzed.

利用单晶X射线衍射技术，结合高分辨电子显微学的研究结果，最终测定了ν-AlCrFe相的晶体结构，并对其中的二十面体的连接情况进行了分析。

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