二十面体

溶液中使用的是片状，二十面体和三角形占主导的金纳米粒子作为催化剂用于反应当中。

In solution contain dominantly plates , icosahedron , and triangle Au nanoparticles as catalysts during the reaction .

正二十面体和二十面体对称病毒

Icosahedron and Icosahedral Viruses

其核酸结构为线状双股DNA，衣壳为二十面体对称，有囊膜。

It has linear double strand DNA , icosahedral-capsid and envelope .

Al－Cu－Fe二十面体准晶的深过冷研究

A study of deep undercooling for Al-Cu-Fe icosahedral quasicrystal

Al（65）Cu（20）Fe（15）合金的凝固组织及二十面体准晶的生成

Solidification microstructure of a1_ ( 65 ) cu_ ( 20 ) fe_ ( 15 ) alloy and formation of icosahedral quasicrystal

讨论了Mn对镁基准晶中间合金中三维二十面体球形准晶相形成过程的影响。

The effect of Mn on formation of three-dimension spherical icosahedral quasicrystal phase in Mg-based master alloy has been discussed .

通过DSC测量和X光衍射定量相分析，研究了Al－Mn准晶二十面体相（Ⅰ相）晶化转变的热力学；

Crystallization thermodynamics of Al-Mn icosahedral quasicrystalline phase has been studied by DSC measurements and quantitative X & ray diffraction analysis .

基于二十面体剖分格网的球面实体表达与Voronoi图生成

Expression of Spherical Entities and Generation of Voronoi Diagram Based on Truncated Icosahedron DGG

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。

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 .

用定量会聚束电子衍射技术优化了AlPdMn二十面体准晶的9个对称性上不等价的低指数结构因子。它们是X射线衍射强度最强的9个反射。

Using the quantitative convergent beam electron diffraction technique , the structure factors of nine symmetry inequivalent reflections , which are strongest according to the intensities of X-ray diffraction , are refined .

等大正二十面体共角顶连结的准晶结构模型（CP模型），是一理想的Al&Mn等准晶结构模型。

The structural model ( CP model ) presented for the quasi-crystal is an ideal A1-Mn one that starts from the corner-connecting stacking of equally-sized icosahedra .

Mg-Zn-Y三元合金中二十面体准晶相生长形貌及其演化

Growth Morphology and Evolution of Icosahedral Quasicrystal in Mg-Zn-Y Ternary Alloys

猪圆环病毒（Porcinecircovirus，PCV）属于圆环病毒科，是一种无囊膜的二十面体的单链环状DNA病毒。

Porcine Circovirus ( PCV ) is a small , nonenveloped , icosahedral mammalian virus containing a circular single-stranded DNA genome , which now has been assigned to the Circoviridae family .

在高于700K温度退火，在二次电子成像中明显发现了体心立方相和二十面体相的转变过程。

Above 700K , we found the transition from body-center cubic phase into icosahedral phase .

Al-Fe-Ce非晶合金中的二十面体短程序

Icosahedral Short-Range Order Within Al-Fe-Ce Alloy

晶格热导率在Ce填充量约为0.29时达到最小值，说明在Sb组成的二十面体空洞中部分填充时，Ce的扰动对声子的散射作用最强。

The lattice thermal conductivity reached the minimum value when the Ce filling fraction was about 0.29 , indicating that the effect of Ce rattling on phonon scattering is the strongest as Sb-dodecahedron partial voids are filled by Ce .

由平衡键长下每原子结合能的比较，证实了Knight的猜测&二十面体Sc（13）在能量上是上述构型中最可几的；

By comparing the binding energy of the clusters at equilibrium bond lengths , we verified the Knight 's suggestion that the icosahedral Sc_ ( 13 ) cluster is most energetically stable of all the cluster mentioned above .

研究HPV-16病毒的结构特点，对于二十面体病毒几何结构的认识、描述和疫苗设计具有重要意义。

To investigate the proteins and structural features of HPV16 capsid will be valuable for understanding of viruses with icosahedral structure and potentially for vaccine design .

Frank-Kasper相Mg32（Al，Zn）49是与其准晶相相对应的1/1近似相，它具有二十面体壳层密堆结构。

Frank-Kasper phase , with an icosahedral close-packed structure , Mg_ ( 32 )( Al , Zn ) _ ( 49 ), is considered as the 1 / 1 approximant phase analogous to its icosahedral quasicrystal .

在等弧长比投影族球面正二十面体投影基础上设计了球面三角四叉树剖分模型（EARPIH）。

Based on the spherical icosahedron case of Equal Angle Ratio Projections ( EARP ), a new Spherical Triangle regional Quadtree ( EARPIH ) is constructed .

运用经典粒子动力学模拟方法，研究了飞秒强激光脉冲（1015～1016W/cm2）与正二十面体构型氢原子团簇H13，H55，H147和H309的相互作用。

Using classic particle dynamics simulations , the interaction process between an intense femtosecond laser pulse ( 10 15 ~ 10 16 W / cm 2 ) and icosahedral hydrogen atomic clusters H 13 , H 55 , H 147 and H 309 has been studied .

发现在943～50K的温度区间凝固过程中，与二十面体结构相关的1551键型数目的变化最为显著，对系统结构组态的变化起关键作用。

It is found that in the range of temperature of 943 ~ 50 K , the relative numbers of 1551 bonds related to the icosahedral structure increase remarkably , which play a critical role in the variation of structural configurations during the rapid cooling process .

应用透射电子显微镜，系统研究了Al-Mn-Si二十面体准晶，拍摄了透射扫描电子象、背散射电子象及不同取向的电子衍射花样、高分辨准晶结构象；

Transmission scatting electron images , back scatting images , electron diffraction patterns of several orientations and high resolution structure images of Al - Mn - Si icosahedron quasicrystal are taken with TEM , and the X-ray powder diffraction pattern is also gotten .

合金获得超高强度主要是由于亚稳态二十面体准晶相在803K和1.2GPa条件下仍稳定存在，对α-Al基体起强化作用。

It has been found that the high strength is attributed to the metastable icosahedral quasicrystal phase embedded in the a-Al matrix , which has been confirmed to be still stable at 803 K under the pressure of 1.2 GPa .

二十面体群拉曼和超拉曼张量的计算

Calculating the Raman and Hyper Raman Tensors for the Icosahedral Group

二十面体病毒衣壳结构蛋白具有不同的构象。

The capsids of nearly all spherical viruses adopt icosahedral symmetry .

大小相近的原子倾向于形成正二十面体配位；

Equal-sized atoms tend to form regular icosahedra in 12-folded coordination .

模拟构筑二十面体病毒衣壳结构的研究进展

Progress of Simulating Construction for the Structure of Icosahedral Virus Capsids

壳粒在正二十面体病毒衣壳中的排列及其数学推算

The Arrangment of Capsomers in an Icosahedral Capsid and Its Mathematical Calculation

柏拉图知道的最后一个这种构形是正二十面体。

The last of these figures known to Plato is the icosahedron .