所述电气石是指铁电气石、锂电气石、镁电气石中的一种或几种；
The said tourmaline is one or more of the kinds such as iron-tourmaline, elbaite and dravite.
收集了15种铁—镁电气石的晶体结构数据，计算了固有电偶极矩，分析了铁—镁电气石的固有电偶极矩与铁含量、价态及分布的关系。
Crystal structure data of 15 iron-magnesium (Fe-Mg) tourmalines have been collected and their intrinsic dipole moments have been calculated.
铁、镁电气石红外发射率相近，且都大于锂电气石的红外发射率；
The IR ratio of Fe tourmaline is close to that of Mg tourmaline, and both are higher than that of Li tourmaline.
铁、镁电气石红外发射率相近，且都大于锂电气石的红外发射率；
The IR ratio of Fe tourmaline is close to that of Mg tourmaline, and both are higher than that of Li tourmaline.
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