机理

The Kinetics and mechanism of esterification of α-methyl butyric acid with ion exchange resin are studied.

研究利用离子交换树脂催化α－甲基丁酸酯化反应的动力学和反应机理。

By all appearances, if these theories could not explain the determination mechanism of interest rate in yield field and the function mechanism of interest rate influencing economy development, then the validity of interest rate policies working out according to these theories was very dubitable .

显然，如果我们不清楚利率在生产领域中的决定机制及利率对生产领域进而对经济发展的作用机理的话，那么依据这样的理论而制定的利率政策的有效性就非常值得怀疑的了。

Through the test of water absorbing, water holding and water releasing performances of all water retention agents, sawdust, vinegar stillage and cabbage palm, this paper points out the affect on ecological concrete of different water retention agent and also conclude the affect on ecological concrete holding water or water releasing of spacing ratios, water retention agents, materials addition and different stones.

通过对SAP高吸水树脂、聚丙烯酰胺和甲基纤维素三种保水剂、锯末、醋糟、棕榈对生态混凝土吸水、保水、失水性能的测试，分析得出三种保水剂对生态混凝土的影响关系以及阐述了空隙率、保水剂、添加剂以及骨料种类对生态混凝土保水和失水的影响；最后对保水剂进行了优选，并对保水机理进行了探索性研究。

The effects of alcohol nature and calcine temperature on the resultant CeO2 nanoparticles were investigated, and the influence mechanism of nano-CeO2 size on the roughness of GaAs wafer was also discussed.

研究了醇的引入及煅烧温度对粉体性能的影响，并就纳米CeO2磨料尺寸对GaAs晶片抛光后表面粗糙度的影响机理进行了探讨。

When pH is 10, adsorption time is 30 min, dosage of bone char is 0.6 g/L, the original concentration of As in drinking water is 0.5 mg/L, As removal can reach 95.2%. The adsorption behavior is fitted both with Langmuir and Freundlich isotherm. The adsorption mechanism is supposed to be Ca—OH functional groups combined with anion. And there may occur the co-precipitation between calcium hydrogen arsenate and hydroxylapatite in the aqueous solution, and ions also exchange. The saturation adsorption capacity of As reaches 4.688 mg/g. Indexes of effluent are in good agreement with the WHO stringent drinking water standards (0.01 mg/L).

研究结果表明：在pH=10，吸附时间为30 min和骨炭加入量为0.6 g/L，饮用水砷初始质量浓度为0.5 mg/L时其砷去除率可达95.2%；骨炭吸附砷的行为同时符合Langmuir和Freundlich等温吸附模型；其吸附机理可能是Ca—OH官能团结合HASO4阴离子，并产生砷酸氢钙和羟基磷灰石的共沉淀，另外还存在离子交换作用；吸附柱的饱和吸附容量为4.688 mg/g；出水砷浓度符合世界卫生组织规定饮水砷标准(0.01 mg/L)。

Then the crystallization mechanics of calcium carbonate is presented.

并对碳酸钙结晶的机理进行了阐述。

The second part of this work is to investigate the kinetics and mechanisms of the reaction between hydrogen chloride and calcium oxide to find out the optimal process conditions.

因此，本文第二部分工作研究了氯化氢和氧化钙反应的动力学及反应机理，以便找到最佳的工艺条件。

That deeply discusses the specialty of calcium and fluoride in saliva and plaque, and makes clear the rule of conversion and reciprocity of it will be important meaning to clear the pathogenesis of caries, and advance remineralization of dental, and effectively process the forecast and prevent and therapy of caries.

深入探讨唾液、菌斑中氟离子、钙离子的生物学特性，研究其转换代谢规律、相互作用以及各种影响因素，对探明龋病的发病机理，促进牙齿硬组织的再矿化，有效地进行龋病的预测、预防和治疗等均有重要意义。

The results show that the temperature and time are important factors to speed up the hydration of cenosphere in calcium hydroxide solution.

根据反应体系中氢氧化钙最强衍射峰强的变化规律，研究了微珠表面包覆层生长机制和包覆机理。

It can be applied in the pulverization of plant fiber material, plant shell material, non-mineral light and heavy calcium.

本机独特的粉碎机理决定其应用范围较广、功能强大和多变的特点：可适用于植物性纤维物料，可适用于植物性壳体物料，可适用于非矿类的轻钙、重钙粉碎等。

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。