查询词典 alkali metal

You see, sodium is actually an alkali metal.

你应该知道，钠是一种碱金属。

The effect factors of alkali metal migration and their reactions in the furnace were analyzed.

分析了影响碱金属迁移的因素及释放出来的气态碱金属在炉内的反应过程。

Moreover, the effects of alkali metal carbonate promoters and the solvents were investigated at the same time.

考察了碱金属碳酸盐类助剂和溶剂对反应活性的影响。

The determination of alkali metal and alkaline earth metal ions by non suppressed ion chromatography was described.

引言碱金属和碱土金属离子的分析在环境、地质、石油化工、农业等许多领域有着重要的意义。

According to those experiments, it was found that the slope was decreased when the atomic number of the cation was increased for alkali metal chloride solutions and alkaline-earth metal chloride solutions.

分析这些实验数据后，发现直线的斜率随着碱金属和碱土金属氯化物盐溶液阳离子原子序数的增加而下降。

Characteristics of ionic clusters M 〓/M 〓 M=alkali metal cations, alkaline-earth metal cations

将HC〓N的转动常数B〓的理论计算值与实际观测值进行比较，其相对标准误差仅0.6％。

The invention relates to a method for making oligomeric isocyanates by reacting diisocyanates in the presence of a catalyst, wherein the catalyst comprises a saline compound prepared from an anion selected from 1,2,3- or 1,2,4-triazole, a substituted species of 1,2,3- or 1,2,4-triazole and carbocyclically and/or heterocyclically annellated species of 1,2,3- or 1,2,4-triazole and the cation selected from an alkali metal, alkaline-earth metal and/or monovalent ammonium cation and/or phosphonium cation of formula (5), wherein the E, R1, R2, R3, R4 are as defined in the descriotion.

本发明涉及一种制备低聚异氰酸酯的方法，包括二异氰酸酯在催化剂的存在下进行反应，其中所述催化剂由盐化合物组成，该盐化合物由选自1，2，3-或1，2，4-三唑、1，2，3-或1，2，4-三唑的取代系列者、1，2，4-三唑的碳环稠合系列者、1，2，3-或1，2，4-三唑的杂环稠合系列者的化合物及其混合物的阴离子和选自碱金属、碱土金属和/或通式(5)的一价铵阳离子和/或磷友衾胱拥难衾胱又票福其中E、R 1 、R 2 、R 3 和R 4 如说明书中所定义。

Alkali metal; Alkaline-earth metal; ionic salvation; ionic association ; quantum chemistry

碱金属；碱土金属；离子溶剂化；离子缔合；量子化学

The ether oxygen groups and the carbonyl groups of polyurethane could"solvate"alkali metal cation and play the role of driving force of metal cation transport in the systems.

聚醚型超支化聚氨酯中醚氧和羰基集团，相对线性聚氨酯能更有效地通过"络合"和"解络合"方式，起到"溶解"和推动碱金属阳离子传输的作用。

The glass transition temperature of the polymers carrying crown ethers as side groups increased when alkali metal ions were added, because the oxygen-metal coordination will lead to the polymer to have order structure.

含有冠醚侧链的高分子在加入碱金属离子后，由于冠醚与金属离子的络合作用导致高分子形成有序结构而刚性增强，其玻璃化转变温度明显提高。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。