Based on experiments, a reaction mechanism for ce in CDCl_3 - "tertiary amine-tertiary amino salt exchange" was proposed, which has successfully explained the Dilution Shift Effect.

在实验基础上提出了苯并氮杂冠醚化合物在氯仿中的叔胺-叔铵盐交换作用机制。

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Through the ionic exchange, the alkaline metal ion of glass surface is placed by other alkaline metal ion in salt melted, enhancing its mechanical strength.

通过离子交换，玻璃表层碱金属离子被熔盐中的其它碱金属离子置换，使机械强度提高的玻璃。

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The principles and characteristics were briefly described on the methods of acid dissolution, alkali dissolution, ion exchange and membrane separation for aluminum salt recovery.

简述了铝盐回收的主要方法，分别为酸溶法、碱溶法、离子交换法和膜分离法，对每一种方法的原理和特点作了介绍。

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The dubious Salt Lake Stock and Mining Exchange closed in 1986.

FORBES: Fraud per capita

Since the federal government technically owns the reserves, the plan calls for the government to transfer 5 billion barrels of pre-salt oil reserves to Petrobras in exchange for shares in the company, thus allowing Petrobras to sell more shares to help finance its work.

FORBES: Brazil: Strategic Planning For Pre-Salt