机理

PG was used to produce different types of binding materials as β-hemihydrate gypsum,Ⅱanhydrate gypsum and α-hemihydrate gypsum and the relevant factors were also studied systematically including the pretreatment methods of raw material, preparation process, the material properties, the mixing proportions, curing conditions and the hydration mechanism of different systems.

对磷石膏制备胶结材进行了深入、系统研究，包括β-半水石膏、Ⅱ-无水石膏的原料预处理方式、制备工艺、性能及其复合胶结材配比、养护、性能与水化硬化机理，α-半水石膏的制备工艺及其性能影响因素，二水磷石膏改性胶结材的配比、养护、性能及其改性机理。

Understand the basic conceptions on homolysis and heterolysis of covalent bonds, and on the nucleophilic substitution and elimination; Grasp the mechanism and stereochemistry of S N 1 and S N 2 reactions; be capable of judging the stability of carbocations; know the factors that can influence the rates of S N 1 and S N 2 reactions; grasp the elimination reactions of haloalkanes, the mechanism and stereochemistry of E1 and E2 reactions.

了解共价键的均裂和异裂及亲核取代反应的基本概念；掌握 S N 1 和 S N 2 反应机理和立体化学；能够判断正碳离子的稳定性；了解影响 S N 1 和 S N 2 反应速率的因素；掌握卤代烷消除反应， E1 和 E2 反应机理和立体化学。

The results revealed that the imine mechanism and hydroxylamine mechanism were both existed in the reaction.

结果表明，从量子化学角度分析，环己酮氨肟化反应的亚胺机理和羟胺机理均可以发生。

Department of Microbiology and Immunology is primarily dedicated to teaching and research in protein secretion in Escherichia coli, cell wall synthesis and cell division in Escherichia coli, interactions and functions of proteins, mechanism of DNA replication arrest, microbial pathogenesis, microbial genetics, immunodeficiency, immunogenetics, infectious diseases, molecular biology, etc.

微生物学与免疫学系主要致力于微生物学与免疫学的教学与研究，其研究领域包括大肠杆菌的蛋白质分泌，大肠杆菌细胞壁合成和细胞分裂，蛋白质的相互作用和功能，DNA 复制抑制机理，微生物致病机理，微生物遗传学，免疫缺陷，遗传学，传染病，分子生物学等。

The macroscopical physical and mechanical character of the soda residue is different from the inartificial soil,so searching after the relation between the microcosmic mechanism and the macroscopical behaviour is the necessary premise for fully knowing and using the soda in a large scale .

由于碱渣在宏观上的物理力学性质和天然土有较大的不同，研究它的微观机理，分析其宏观性质的微观机理，找出这两者之间的联系，是彻底认识和利用碱渣的必要前提。

In chapter 2, we systematically introduced the theory and process of radio frequency magnetron sputtering and ion beam deposition sputtering.

第二章较为系统地介绍了溅射机理以及磁控溅射镀膜和离子束溅射镀膜机理和工艺特点，薄膜的沉积过程。

In this paper, the effects of positive charged ion-pair reagents on the retention of positive charged metal chelates and negative charged ones are studied in detail.

目前对其作用机理的研究主要集中于有机物，对离子型金属配合物保留的影响机理研究极少，且无定论。

In the meantime, we proposed a mechanism for this catalytic reaction. According to the possible formation of intermediate B, we designed a disubstituted ketene of more function to re-capture the zwitterion.

在同位素标记基础上，我们推测了这个N-甲基咪唑催化的二组分反应可能的机理，并根据此机理设计用一个二取代的烯酮来捕捉N-甲基咪唑和DMAD形成的两性离子。

It also elaborates the different models of porous silicon formation mechanism and luminescence mechanism .

阐述了多孔硅的形成机理和发光机理的各种模型，同时对多孔硅的研究前景作了展望。

Chemical methods such as surface contact angle analysis etc. were used to study the mechanism of microwave activated crumb rubber powder. The mechanism of the modified asphalt improved by MACR was analyzed by microcosmic measures and tests such as SEM etc.

通过接触角等化学分析方法研究微波辐射活化胶粉的机理；利用扫描电子显微镜等微观测试手段分析活化胶粉改善沥青性能的机理。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。