Tourmaline is a kind of gem material with complex structure, composition and isomorphoussubstitution, which resuslt in diverse types and colors of this gem.
辐照处理是碧玺颜色改善很重要的一种方法。
2
The results show that isomorphoussubstitution occur in the diamonds and the vibrational spectra characteristics of the diamonds depend on the substitution of different elements.
结果表明,在天然金刚石中存在类质同象置换现象,其振动光谱特征随置换元素的不同而不同。
3
The results showed that Fe atoms embed the framework of FeAPO-5 molecular sieve by isomorphoussubstitution and the crystallinity of FeAPO-5 molecular sieve exhibited good and grains were uniform.