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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。

In this thesis, the strength of hydration for different alkaline and alkaline earth ions was obtained quantitatively by MD simulation.

本论文通过分子动力学模拟对碱金属和碱土金属离子水化强弱的进行了定量描述。

Based on the pioneers' research work, the theoretical calculations have been performed on the interactions between the alkaline earth ions and aromatic systems.

在前人研究一价离子的基础上，进一步研究了金属离子，特别是碱土金属离子与芳环体系的相互作用。

In the third chapter, the cooperative effects of alkaline earth metal ions and EDTA on the corrosion inhibitor of pure aluminum in alkaline solutions were investigated.

第三章中，作者研究了碱土金属离子与EDTA对纯铝在碱性溶液中的缓蚀作用。

CALORIMETRIC TITRATION FOR COORDINATION REACTION OF 2, 3-BENZO-8, 11, 15-TRIMETHYL-18-CROWN-6 WITH ALKALI AND ALKALINE EARTH METAL IONS

若干碱金属及碱土金属离子与2，3-苯并-8，11，15-三甲基-18-冠-6配位反应的量热滴定研究

Arenedisulfonates have much stronger coordination ability to alkali, alkaline earth than to transition metal ions.

芳烃二磺酸根离子与碱金属离子和碱土金属离子的配位能力比过渡金属离子强。

The electrode has a highly selectivity for silver ion over alkali, alkaline earth and common transition metal ions.

该电极可作为测定维生素B1药片中维生素B1含量的电位滴定指示电极和水样中银离子含量的直接测定。

It was found that cyclic peptide 23shows higher transport activity for the studied alkali and alkaline-earth metal ions thancompound 24, which is related to the backbone flexibility of the cyclic peptides.

研究了在这两种环肽的存在下，碱金属和碱土金属离子穿越二氯甲烷液膜的过程。

The mechanism,thermodynamics and kinetics of ion-exchange reactions between alkali,alkaline-earth and transition metal ions and zirconium phosphate and its derivatives ar...

本文综述了碱金属、碱土金属、过渡金属离子等与磷酸锆及其衍生物的离子交换反应机理、热力学和动力学特性，另外也讨论了发光金属配合物与磷酸锆的离子交换反应研究进展。

The mechanism, thermodynamics and kinetics of ion-exchange reactions between alkali, alkaline-earth and transition metal ions and zirconium phosphate and its derivatives are reviewed, progress in ion-exchange reaction between luminescent metal complex and zirconium phosphate is also discussed.

本文综述了碱金属、碱土金属、过渡金属离子等与磷酸锆及其衍生物的离子交换反应机理、热力学和动力学特性，另外也讨论了发光金属配合物与磷酸锆的离子交换反应研究进展。

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。