碱金属

In addition, the solubility mechanism of water in silicate melts is also discussed on the basis of the influence of alkaline components on solubility of water. And this is accordance with Sykes' conclusion according to molecular orbital calculation and Raman,FTIR spectroscopy to research the solubility mechanism in aluminosilicate melts.

此外，根据碱金属组分对水在硅酸盐熔体中溶解度的影响对水的溶解机制进行了论述，这与Sykes等通过分子轨道计算和拉曼、红外光谱研究得出的水在铝硅酸盐熔体中的溶解机理是一致的。

Based on the effects of atomic radius on the Curie temperature, new bismuth layer-structured piezoelectric ceramics Ca〓〓Bi〓Ti〓O〓 with high Curie temperatures and piezoelectric activities were obtained by A-site substitution for Ca.

本论文从取代原子半径对居里温度的影响入手，利用碱金属原子Li，Na，K和Ce原子复合取代层数m=4的铋层状铁电体CaBi〓Ti〓O〓中位于A位的Ca原子，在保持材料高居里温度的前提下获得了压电系数d〓明显改善的铋层状结构压电陶瓷。

A light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite.

轻而软的银白色碱金属元素，空气中能迅速氧化，能与水发生剧烈反应，以天然化合物状态大量存在于海水、光卤石、钾盐镁矾和钾盐中。

A soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite.

一种软质的银白色或淡黄色碱金属元素，在空气中变黄，见于天青石和菱锶矿中。

Cesium and organic alkali will occur with other similar reactions, but it's quite lively.

铯和有机物也会发生同其他碱金属相类似的反应，但它比较活泼。

It is demonstrated that the chiral quaternary ammonium salts catalysts exhibit promising catalytic properties for the substrate. Part III: The synthesis and the characterizing of the macroporous aminomethyl resin-supported cinchona alkaloid complexes and the study on its catalytic properties The part consists of two subsections. the macroporous aminomethyl resin -supported cinchona alkaloid complexes were synthesized by the stuff (cinchonine, quinine and macroporous aminomethyl resin). Their structures were characterized by means of elemental analysis, XPS, TG/DTA; the chiral polymer-supported complexes were first used as catalysts for the reduction of ketones. Their catalytic properties for the reduction processes were investigated. The comparison of the products e.e., the conversion of the substrate among different reduction processes was employed with determined by HPLC. The effects of the time, the temperature, the ratio of catalyst to substrate, reaction solvent as well as the recycle times were also discussed.

第三章聚-4-氨甲基苯乙烯负载金鸡纳碱金属络合物的合成与表征及其不对称催化性能研究本章分为两节，以辛可宁和奎宁及聚-4-氨甲基苯乙烯为原料，合成了4种聚-4-氨甲基苯乙烯负载金鸡纳碱络合物催化剂，并对它们的结构用元素分析、X-射线光电子能谱、TG/DTA等几种测试手段进行了表征；首次将所合成的手性高分子负载的金属络合物用于催化芳香酮不对称还原反应，详细研究了所得的手性高分子负载的金属络合物对不同底物的催化性能，用HPLC等分析手段定量检测了还原过程的底物转化率及其产物对映异构体选择性，并考察了反应时间、反应温度、催化剂和底物投料比、反应溶剂和循环次数对催化性能的影响。

All the alkali metals have a single s-electron outside a closed shell.

所有的碱金属都在闭合壳层之外有一单个S电子。

The ground state of Ag atom has a closed Ad shell and a single s valence electron, hence it could be seen as "alkali-like" metals.

基态银原子具有饱和的内层d电子4d~(10和1个价电子(5s~1)的电子构型，与碱金属壳层结构类似，因此被看作"类碱"金属。

From the view of conservation of organic matter, the water body in evaporates basin takes on the character of density stratification; the niederschlag below mascon has high oxidation-reduction potential, which contribute to the conservation of organic matter. From the view of generation of hydrocarbon, bacteria, algae and lithology on the bottom of salt-water basin play important role in generation of hydrocarbon; furthermore, clunch from the redbeds acting as catalyzer, alkali metals making the hydrocarbon mobile.

从油气生成条件看，细菌、藻类及咸水盆地底层的岩性对油气的生成具有重要作用，此外红层中的粘土对烃类的生成起到催化的作用，碱金属可使生成的烃类发生流动；从有机质的保存条件看，蒸发岩盆地水体中具有密度分层的特点，在高密度层以下的沉积物具有强的氧化还原电位，从而使有机质保存下来。

Integrated gasification combined cycle is one of the trends of clean coal power generation technology. However, that alkali metal vapors contained in the syngas which are generated from coal gasifier easily deposit on the surfaces of convectional syngas cooler will not only lead to slagging, but also will cause high-temperature corrosion of gas turbine blades.

整体煤气化联合循环(integrated gasification combined cycle，IGCC)发电技术是洁净煤发电新技术的发展方向之一，但煤气化释放出的碱金属蒸气易在对流废锅中形成污垢，而且会引起燃气轮机叶片的高温腐蚀。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。