结构体

It is found that there exists an obvious prepeak in the low-Q domain (Q=15.7 nm^-^1) of the structure factor. In the X-diffraction pattern, the liquid diffraction curve is corresponding with the solid diffraction curve. There exist the prepeaks for them in the low-Q domain, which shows that there is the comparability in the microstructure between them.

采用紧束缚原子间作用势，利用分子动力学模拟的方法研究了Al5Fe2合金熔体的微观结构，发现在结构因子的小角部分(Q=15.7nm^-^1)出现了一个明显的预峰，并得到X射线衍射实验的进一步印证，在实验测得的合金衍射图样中，液态衍射曲线与固态衍射曲线间存在着很好的对应关系，它们在小角部分都存在峰位，这表明Al5Fe2合金熔体与其固态在结构上存在着很大的相似性。

By applying density functional theory, the relationships between the electron structures and the complexation of the two types of bis-β-diketone ligands (dithiol-γ-linked or alkyl-γ-linked) were investigated, based on the polarized continuum model of the self-consistent reaction field. Using the model B3LYP/6-31G**, the geometries of the ligands were optimized and the electron structure changes calculated.

基于自洽反应场中的极化连续介质模型，采用密度泛函理论B3LYP/6-31G**计算了以二硫醚和芳环为桥基的两类双β-二酮配体的空间构型和电子结构，结合其配合物晶体结构数据，研究配体分子电子结构与配位性的关联性。

Based on the characteristic of multi resolution of wavelets analysis, a effective method for displaying any cross section from coarse to fine resolution is presented; Based on OpenGL, the paper improved Ray-Casting arithmetic and footprint arithmetic considering the characteristic of seismic data; After introducing the characteristic of geology data and the process of seismic interpretation, the paper presents a theory frame of 3D geological interpretation software and partly realize the frame.

本文首次利用小波变换实现了三维地震数据体的快速多分辨率显示；针对地震数据体的特点，提出了基于OpenGL的改进光线投影法的快速算法及改进的脚印算法；实现了地震数据体的切割、面状地质体的构造及面状构造与地震数据体的联合显示，动画效果的形成等三维地震数据体显示效果；分析了三维地质体的特点及常规地质解释过程的特点，提出了三维地学可视化软件的体系结构，并实现了其中主要功能，取得了良好的效果。

The molecular structure of this isomer has been determined by X-ray diffraction and it is the first time to report the crystal structure of this kind of isomer which was proposed erroneously in the literature.

采用X-射线衍射的方法测定了其中一个异构体的结构，这是对此类异构体单晶结构的首次报导，纠正了文献中存在的对此类化合物结构的错误认识。

Using 1,3-dicyanobenzene as a precursor, we have obtained two coordination polymer of rare earth metal bridged by isophthalato ligand, Eu complex (4) and Sm complexe coordinated (5). X-ray single crystal diffraction investigation confirms that complex 4 and 5 are isomorphous with near isostructural 〓 unit.

以1，3-苯二氰为前体，合成了两个新的稀土金属与间苯二甲酸根配体桥联的聚合物：间苯二甲酸根配体配合的铕和钐化合物，4和5.X-射线衍射结构分析表明化合物4和5均具有〓基本结构单元且两者结构类似。

Combining the fully stressed optimality criterion with finite element analysis, the material distribution is optimized after several iterations.

采用满应力准则法，借助有限元结构分析，经过少量迭代，建立优化的材料连续分布场，即类桁架连续体结构。由于首先建立的拓扑优化结构是各向异性连续体，从而得到更大优化空间。

The PROTHALLUS of Lycophyta, Sphenophyta, and Filicinophyta, which may be a green structure on the soil surface or a subterranean mycorrhizal structure, is the gametophyta.

石松门、楔叶门、真蕨门的原叶体是位于地表的绿色结构或是位于地下的菌根结构，这些结构便是蕨类植物的配子体。

For the raft, an isoparametric element method and VoigtKelvin model are adopted, which can be used to derive viscoelastic element stiffness matrices, a reform of successive approximation of Rayleigh Quotient is used to solve the eigenvalue problem of the composite structure.

对于筏架结构，采用Voiget-Kelvin模型及等参元法，推导了约束阻尼层单元的刚度阵及将Rayleigh商的迭代步骤加以改进的方法来进行特征分析；对于艇体结构与声学介质耦合部分，采用艇体结构的"干"模态作坐标变换。

The research is little and unclear about the physiological metabolism and biological activity caused by structural differences between yam steroid saponins and sapogenin. In this study, therefore, the furostanol glycosides and spirostanol glycosides with different forms of glycoside, and diosgenin with no glycone were isolated from yam (Dioscorea Pseudojaponica Yamamoto in Taiwan) that were investigated the effect and mechanism on anti-cancer for the structurally different Saponins and sapogenin.

然由於目前对於山药类固醇皂及皂元间结构差异所造成的生理代谢与生物活性之研究甚少，仍不甚明了，因此本研究以台湾基隆山药为原料，分离出furostanol glycosides和spirostanol glycosides等不同形式配醣体结构之皂，并与不含醣基之薯蓣皂元（diosgenin；DIO）进行实验，探讨山药皂抗癌之功效与机制，并进ㄧ步探讨比对此些功效与机制是否因山药皂配醣体结构（furosten和spirosten）形式之不同，以及醣基之有无而有所差异。

In the meantime, the peak value of structure resonance contributes little to the response. The distribution of vertical displacement and wave bending moment of transverse section, which is along the direction of the floating structure length, appears unsymmetrical character. According to the wave scatter diagram of BI sea area of northwest pacific, which is in fairly calm condition, the amplitude values of long term prediction of wave bending moment in midsection and deck bending stress are quite large.

根据西北太平洋B1海区波浪散布图计算的波浪弯矩和舯剖面甲板弯曲应力的长期预报值是相当高的，日本的箱式浮动机场的概念设计中，浮体结构设置在离岸很近的平静水域且外围设置了防波堤，这可能是出于改善超大型浮体结构的运动性能和为了满足结构强度要求。

He believes organic soil management can help retain moisture and protect against crop failure. The true test came during the devastating drought of2000-02, when Mr Murage's vegetable gardens fared better than his neighbours'. At least 300 farmers have visited his gardens and taken up at least one of the practices he espouses.

他相信土壤的有机管理可以保持土壤水分，防止农作物欠收。2000-2002年的干旱破坏性极大，但是穆拉盖先生的菜园长势比邻居的要好得多，经受住了考验。300多名农场主参观了他的菜园，并且每个人都至少学到了一项他所使用的技术。

Sports and games are also very useful for character-training.

4，体育运动对性格的培养也很有益处。