查询词典 ionic structure

In our study, the synthesis of spice and the resolution of racemates menthol,(R, 5-4-hydroxy-3-methyl-2-(2-propenyl)-2-cyclopenten-1-one (R, S-HMPC were achieved in ionic liquids by three lipase that are usually used in biocatalysis. Meanwhile, some problems associated with enzyme catalysis in ionic liquids were also addressed.

本论文以三种常用于生物催化的脂肪酶作催化用酶，在&绿色&反应介质—离子液体中实现了香料的合成和手性对映体的拆分，同时也对酶在离子液体中催化所存在的问题进行了一些探讨。

With increasing temperature, the ionic transference number and the ionic conduction region slightly increase.

随着温度的升高，其氧离子迁移数和离子导电区域都轻微增大。

Ionic liquid is a salt melting at about room temperature, which consists of organic cation and inorganic or organic anion. Four methods for synthesizing ionic liquid are reviewed.

室温离子液体是由有机阳离子和无机或有机阴离子构成的、在室温或室温附近温度下呈液体状态的盐类。

In this work, the ionic liquids was used as the microwave absorption medium and an ionic liquid-non polar solvent microwave extraction method was developed. The proposed method was applied to the extraction of the chemical constituents from the root of Panax ginseng C.M.

以离子液体作为微波吸收介质建立了离子液体-非极性溶剂微波提取法，对人参中的化学成分进行了提取，并将该法与固体微波吸收介质-非极性溶剂微波提取法、极性溶剂微波提取法以及混合溶剂微波提取法进行了对比。

The calculated results show that azido in azides has linear structure , the most optimized CaN6 has linear structure , and the most optimized (CaN6)n (n=2～5) clusters have chain structure of perpendicularity of approximate diamond composed by two azido with two Ca atoms . The middle N atoms of azido show positive, the N atoms at both ends of azido show negative, and the N atoms effected with Ca atoms directly show more negative . There is strong ionic bond between the Ca and N atoms. The IR spectra of the most optimized (CaN6)n (n=1～5) clusters have four vibrational sections , the whole strongest vibrational peak lies in 2195～2280cm-1,and the vibrational mode is anti-symmetric stretching vibration of N-N bonds in azido . Stability analysis show that (CaN6)3 and (CaN6)5 clusters are more stable than other clusters .

结果表明，叠氮化合物中叠氮基以直线型存在，CaN6团簇的最稳定结构为线型结构，(CaN6)n(n=2～5)团簇首先由两个叠氮基与两个Ca原子构成一个近似菱形，再由菱形相互垂直形成链状最稳定结构；叠氮基中间的N原子显示正电性，两端的N原子显示负电性，且与Ca直接作用的N原子负电性更强，金属Ca原子和N原子之间形成很强的离子键；(CaN6)n(n=1～5)团簇最稳定结构的IR光谱分为4个部分，其最强振动峰均位于2195～2280cm-1，振动模式为叠氮基中N-N键的反对称伸缩振动；稳定性分析显示，(CaN6)3和(CaN6)5团簇相对于其他团簇较为稳定。

Here have formed in about 14 million years ago to 3 million years between the Mesoproterozoic Jixian System Yunmeng Mountain Group - Upper Carboniferous Taiyuan Formation, exposed systems and complete; has Archaean - Early Mesoproterozoic basement, but also has the typical structure of relics, such as the basement Archaean gneissic complex structure, Early Mesoproterozoic supracrustal rocks at the end of secluded fornix structure, super-nappe cover, ductile shear zone tectonics, ductile - brittle deformation structure of brittle fault cleft construction, single-sided Hill Construction, as well as the cap structure of the collapse, landslides and other structure.

这里有形成于距今约14亿年～3亿年间的中元古界蓟县系云梦山组—上石炭统太原组地层，出露系统而完整；有太古界—早元古界基底，还有典型的构造遗迹，诸如基底太古界片麻杂岩构造，早元古界表壳岩的底僻穹窿构造，盖层的超覆构造，韧性剪切带构造，韧-脆性变形构造，脆性断裂构造，单面山构造，以及盖层中的垮塌构造，滑坡构造等。

The math models of the tree structure chart and the net structure chart are formed by describing the different road state abstractly.The tree structure chart model is presented without consideration of U structure and ring structure. This kind of model has a notable feature: there is a line only between the two dot in the chart, which means that there is only one road from one point to another point in expressway ,so the tree structure chart is called "single roads chart".

在不考虑U型路段和环路的情况下，提出了高速公路的树状结构图模型，该模型具有一个显著的特点：图中两点之间有且仅有一条连线，这意味着由高速公路上的一个地点到达另一个地点仅有一条通路，也称这种高速公路树状结构图为"单路径图"；考虑到包含U型路段和环路的高速公路路况，提出了高速公路的网状结构图模型，这种模型可抽象成一个连通图，即图中任意两点之间至少有一条直线相连，这意味着由高速公路上的一个地点到达另一个地点有多条通路，也称这种高速公路网状结构图为"多路径图"。

According to the studied results at present, the studied objects are mainly thin plate and beam about sound radiation mode, a method computed sound radiation mode of complex structure is presented in this dissertation, according to the results of the previous two chapter, a theoretical method to solve acoustical radiation mode and acoustical radiation efficiency of complex structure by boundary element method and acoustical radiation theory is posed, the acoustical radiation power is expressed as a Hermitian quadratic form, while the radiation modes is determined by general eigenvalue decomposing, and then the radiation efficiency is computed via the orthodoxy of radiation modes with regard to impedance matrix and average velocity matrix; lastly, the validity of the method is proved by pulsating sphere and radiating cube with analytical results. According to results of the form three chapter, the structure sound radiation sensitivity is studied in detail, the sound radiation power of structure can be expressed as positive Hermitian quadratic form, the sound radiation sensitivity can be expressed as two parts by partial differential with respect to design variable, which are sensitivity of boundary velocity and impedance matrix, combined with the theory of FEM and BEM, the structure sound radiation can be translated to the analysis of structure dynamic sensitivity and impedance matrix sensitivity. The theory posted in this dissertation is tested by the FEM software ANSYS and the software AAS programmed by author.

在前几章的基础上，通过结构声辐射的模态理论对结构的声辐射的机理进行了深入地探讨，针对目前声辐射模态的研究对象主要是简单的板和梁类结构，提出了一种计算复杂结构声辐射模态的方法，利用前两章研究所得的结论，将边界元方法与广义特征值的理论结合起来研究了复杂结构的声辐射模态与声辐射效率，先将结构的声辐射功率表示为一个正定的厄米特二(来源：ABb7C论文0909网www.abclunwen.com)次型，运用广义特征值分解求解了复杂结构的声辐射模态，然后利用声辐射模态关于阻抗矩阵与均方速度耦合矩阵的正交性，求解了复杂结构的声辐射效率，最后用具有解析解的脉动球与辐射立方体验证了该方法的有效性。

The concepts of weight lattice structure, sphere lattice structure and lienor lattice structure are introduced to describe it, some properties of the k-error lattice structure are given, and a relationship between the k-error lattice structure and the k-error linear complexity is presented. These create a elementary frame of the stability theory of the lattice structure.

提出了伪随机序列格结构的稳定性问题，引入重量格结构、球体格结构、k-错格结构等概念来描述之，给出了k-错格结构的一些基本性质，并研究了k-错格结构与k-错线性复杂度的关系。

Current researches show little attention to this structure and thus this paper is devoted to an overall understanding of this structure. The content of this thesis focuses on the following three aspects:First, when restricting the potential semantic range of noun phrases with its own proposition, the modifying clauses in English and Chinese share the same semantic features. That is to say, the modified noun phrase and the predicate of the clause depend on each other for existence. This semantic restrictiveness is obligatory for the clause and the noun phrase it modifies in both languages. Second, though sharing the same potential conceptual meaning, the combination of a clause and its modified noun phrase shows different syntactic position in surface structure as well as the inner structure of the clause. Based on a full description of syntactic characteristics of this kind of clause, the present thesis points out the differences and similarities existing in surface structure between English and Chinese. Finally, under the guidance of Chomskys Minimalist Program(1995), the thesis analyses the derivational processes of this structure in both languages.

现有的对比研究对于该结构的探讨，不论是在描述和解释上都是不完备的，为了深化这一句法结构的认识，本文从如下几个方面对英汉分句作定语修饰名词的现象进行了对比：首先，分句用自身的命题限制中心名词的语义范围时，在两种语言中具有相同的语义特征，即中心名词与分句内部的谓词之间存在依存关系，分句修饰名词必然受到语义的限制，是英汉两种语言必须共同遵守的准则；其次，英汉两种语言中表达相同概念意义的这一句法单位与其修饰的名词结合后，在表层结构中体现出不同的位置关系，且分句内部的句法结构也各有特点，本文在充分对其句法特征描述的基础上，指出二者在表层形式上的差异和共性；最后，尝试在乔姆斯基的最简方案(1995)框架内，演示英汉两种语言。

Fostering the concept of multi-culture firmly and mastering the development of advanced culture correctly are conductive to resisting terrorism, separatism of nationalities and ultraism of religion, which is of great academic theoretical, immediate and profound historical si...

牢固树立多元文化的理念和正确把握先进文化的发展方向，有助于在世界范围内自觉地抵制恐怖主义，民族分裂主义和宗教极端主义。不仅具有重大的学术理论意义，而且也具有重大的现实意义和深远的历史意义。

But if anyone walks in the night, he stumbles, because the light is not in him.

11：10 若在黑夜行走，就必碰跌，因为那光不在他里面。