几何结构

In this work, a full optimal calculationon the molecular geometry and electronic structure of C24H30O8 has been performed usingdensity functional theory methods at B3LYP/6 - 31G * level. The solvent effects ofC24H30O8 have also been investigated based on Onsager self-consistent reaction field model in chloroform, acetone,DMSO and water.

采用密度泛函理论方法，在B3LLYP/6-31G*水平下全优化得到了该化合物的分子几何构型和电子结构；依据Onsager自恰反应场模型考察了其在氯仿、丙酮、二甲亚砜及水等溶剂中的溶剂化作用；基于气相优化结构进行了B3LYP/6-31G*振动分析，用0.9613校正后的主要红外光谱与实验符合得很好。

A series of excited state energies which corresponded to Cu-O four bonds structure of CuO〓 plane under the balance geometry structure were calculated.

通过理论计算可知几个Cu-O结构平衡几何构型下的Cu、O原子间距、Bi系高温超导体CuO〓面的结构参数，以及Cu在CuO〓面内的价态形式等。

On the basis of researching sealing pipeline joint structures with double-cone pipe union in depth, this paper used the method of Robust Design, synthesized the mainly factors such as geometrical sizes of components, mechanical property of material, surface roughness of components, axial preloading force, fit clearance, taper and the difference of taper etc., and obtained a set of design rational parameters.

本文在深入研究双锥形管接头密封管路联接结构的基础上，运用稳健设计方法，综合元件几何尺寸、材料力学性能、元件表面粗糙度、轴向预紧力、配合间隙、锥角和锥角差等因素，找出了该结构比较合理的设计参数组合。

There are three forms of symmetry in virus capsids: icosahedral , helical and complex forms.

壳粒排列的方式使病毒的结构呈几何对称，病毒衣壳有三种对称形式：二十面体立体对称、螺旋对称、复合对称，螺旋结构呈杆状，而二十面体由对称的亚单位组成近似的球状，非对称的衣壳是较复杂的形式，往往与细菌病毒有关。

A virus is a unit of infectious genetic material smaller than any bacteria and embodying properties placing it on the borderline between life and non-life. The vast majority of the virus capsid protein assembled into icosahedral symmetry of the structure. Caspar-Klug Theory has become a fundamental concept for the classification of icosahedral viral capsids based on the principle of quasi-equivalence.

二：病毒是比任何细菌都小的感染性遗传物质，介于生命与非生命之间的一类无细胞结构的生物，绝大多数病毒的衣壳蛋白装配成二十面体对称的结构，&准等价&原理是解决严格遵从二十面体对称性的病毒衣壳几何特征的有效而成熟的方法。

The hybrid density functional theory B3LYP with basis sets 6-31G^＊ has been used to study on the equilibrium geometries and electronic structures of possible isomers of Si3N4 dusters.

用杂化密度泛函B3LYP在6-31G^＊的水平上研究了Si3N4团簇可能结构的平衡几何构型和电子结构。

The guyed mast structure is made of soft cables and slender mast shaft, which dynamic characteristics are very complicated due to its large displacement and nonlinearity. Because its complicated theory is not fully understood yet, the damage probability is relatively high under normal design, construction and material.

桅杆结构是由纤绳和杆身所组成，其大变形及几何非线性使得其动力特性十分复杂，在正常设计、建造及材料情况下，桅杆破坏发生的比例之高在土木建筑中是罕见的，这主要是因为桅杆结构复杂的工作机理尚未完全被揭示。

Based on the structural-alignment and geometric similarity model, a new approach to Chinese word similarity computation is proposed. By separating the word concept description into two parts of attribute space and case space, which respectively process the structural alignment and calculate the distance of sememes aligned, the word concept similarity is made of the two parts distance with different weight.

基于结构对齐和几何相似模型，把词语概念描述分解为属性部分和语义角色部分，各部分结构分别对齐后，计算对齐义原的关系距离，加权组合计算词语的相似度。

A great number of viruses' capsid proteins are efficient assembly into icosahedral symmetry structures. The capsid structures obey the quasi-equivalence theory of Caspar-Klug, and they are directly composed of pentagons and hexagons.

摘 要 绝大多数病毒的衣壳蛋白装配成二十面体对称的结构，其衣壳结构遵从 Caspar-Klug 的准等价原理，即是由五边形和六边形直接拼接而成的几何构型。

Using these elements, the nonlinear dynamic response of laminated structure under the visco elastic damping were numerical studied. Many beneficial conclusions were obtained.

用本文构造的几何非线性单元，对粘弹性阻尼作用下的层合结构动响应及粘弹性阻尼衰减效果进行了计算和分析，得到了一些有益的结论，可作为材料和结构设计的指导。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。