晶格内的离子可发生置换，如羟基离子可被氟离子替代。

For example, the hydroxy can be replaced by fluorine ion.

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不过，它的能量足以引发电子产生振动—特别是那些金属晶格内的自由漂浮电子。

It is, however, powerful enough to set electrons vibrating-particularly those electrons already floating free inside a metallic crystal lattice.

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这个特性在原胞的晶格常数变化的- 3% - 20%范围内保持不变。

This character remains in the variation range of -3%-20% of lattice constant.

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