构

The tautomerization and decomposition channels of amino-tetrazoles,mainly 5-amino-tetrzole and 1,5-diamino-tetrzole,were reviewed.

对氨基四唑的多种分解和异构途径进行了综述，主要介绍了5-氨基四唑和1，5-二氨基四唑异构和分解的国内外研究现状。

Photoinduced tautomerization of DMBDK in acetonitrile was studied by means of UV and fluorescence spectroscopy.

通过紫外和荧光光谱研究了DMBDK在乙腈溶液中的光致互变异构行为，结果表明，荧光光谱可用于跟踪某些β-二酮化合物的互变异构过程。

In chapter 2, concerning the chemistry of many kinds of olefin-coordinated alkoxycarbene iron complexes and their isomerized products previously synthesized by our group, we examined their thermolysis reactions and many novel thermolysis products were isolated.

第二章中，对于我们小组以往合成的各类烯烃配位的铁卡宾络合物及其异构化产物，为了研究其反应性能，我们从热解反应着手，研究了一系列烯烃配位的铁卡宾络合物及其异构化产物的热解反应，获得了一系列新奇的热解产物。

Results show that, by using thionyl chloride and N,N-dimethyl formamide as chlorinating reagent and dichloromethane as solvent and taking -15℃ as reaction temperature, Z-iomer crystals with pale white color and stable to temperature can be obtained with an overall yield of 70%.

以2-（2-氨基噻唑－4-基）－2-甲氧亚氨基乙酸为原料，经盐酸化、氯代等反应合成了Z-2-（2-氨基噻唑－4-基）－2-甲氧亚氨基乙酰氯盐酸盐；氯代时以用亚硫酰氯和N，N-二甲基甲酰胺的混合物代替五氯化磷作氯化剂，并考察了温度和溶剂对氯代产物中Z-异构体和E-异构体收率的影响。

In the second part, other types of chiral selectors were used for enantioseperation of thioridazine in order to compare with the MI-S-b-CD system.

第二部分则以其他种类的环糊精等对掌选择剂来分离分析物的对掌异构物，探讨不同对掌选择剂对分析物对掌异构化动态学的影响，与MI-S-b-CD分离的结果做比较。

The results reveal that the position, as well as the number, of sulfate substituent of S-b-CD plays an important role in the enantiomerization reaction of thioridazine.

此结果显示对掌异构物间的转换，与所使用特定的对掌选择剂有关，也意谓S-b-CD的硫酸根取代基位置与取代基数目在thioridazine的对掌异构化扮演著重要的角色。

Topological indexes of A , B , C and D were all obtained from the different combination of topological vertex degree. A QSAR equation for this series of compounds was established based on the multi-linear regression method and a new group of autocorrelation topological indexes. The results showed that the biological activity is linearly correlated with the volume and branching size of the quinclorac derivatives. Finally, new herbicide was designed based on all QSAR results.

针对应用经典结构参数和量子化学参数得出的结果不够理想的问题，对点价自相关拓扑指数进行了研究，建立了一组新型的点价自相关拓扑指数A、B、C、D；首次将该指数用于除草剂氯喹酸酯类化合物的定量构效关系研究中，建立了很好的定量构效关系方程，综合分析所有的QSAR结果设计出了潜在的新型除草剂氯喹酸烯丙酯。

For inheriting the dynamic constraint information of the multibody simulation model, topological configuration of the multibody simulation model was built, and simplified constraint form was put forward with the topological mapping of the multibody simulation model in the heterogeneous systems. To transform the information of the multibody simulation model, the offset matrix which transformed the location and orientation of constraints and the matrix which transformed the location and orientation of parts were computed.

利用多体动力学仿真模型在异构系统的拓扑映射，建立多体动力学仿真拓扑构型，提出仿真模型动力学约束的约束简型表示法，实现动力学约束信息的关联继承，并通过约束偏置变换矩阵和构件位姿变换矩阵的求取，驱动多体动力学仿真模型构件和约束位姿的自动调整，实现多体动力学仿真模型的动态转化。

A one-dimension divided linear model is established on the simplified calculation and the transformation characteristic of SMA in superelastic state.

在形状记忆合金常用的本构关系模型的基础上，结合SMA处于超弹性状态的相变特点，通过适当的简化，建立了分段线形的本构模型，并通过国产NiTi形状记忆合金丝材的拉伸试验对模型进行了验证。

In chapter 3,we will consider the automorphisms of triangular matrix algebras over commutative semirings.

利用矩阵的一些性质，克服了环上可逆矩阵在半环中未必可逆的难点，证明交换半环R上的n阶三角矩阵代数Tn的自同构都是内自同构。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷