借助于可见光谱的测定，考查了它们在溶液中与碱金属和碱土金属盐等的配位性能。
The complexation properties of them with alkali and alkaline earth metal ions have been investigated by means of visible spectra in solutions.
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。
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.
还描述了一种使用碱金属盐来生产具有高特性粘度和改善的机械和热性能的PEK的聚合方法。
There is also described a polymerization process using the alkali metal salt to yield PEK with high inherent viscosity and improved mechanical and thermal properties.
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