Tourmaline is a kind of gem material with complex structure, composition and isomorphous substitution, 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。
The commutation near ring defined, it is proved that the near ring of an arbitrary near ring with its unit dimension is isomorphous with its commutation near ring.
定义了变换近环，然后证明了任意一个有单位元的近环与它的变换近环同构；任意一个无零因子近环与它的变换近环同。
The results show that isomorphous substitution 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。
The micro-variation equivalent circuit method is used to analyse and study the circuit features of the multiple unit tubes with the isomorphous or heterogeneous structure systematically.
应用微变等效电路法，对具有同型和异型结构的两类复合管的电路特性，进行了比较系统的分析和研究；
The results showed that Fe atoms embed the framework of FeAPO-5 molecular sieve by isomorphous substitution and the crystallinity of FeAPO-5 molecular sieve exhibited good and grains were uniform.
结果表明，铁原子通过同晶取代方式进入分子筛骨架，结晶度高，晶粒均匀。
The results showed that Fe atoms embed the framework of FeAPO-5 molecular sieve by isomorphous substitution and the crystallinity of FeAPO-5 molecular sieve exhibited good and grains were uniform.
结果表明，铁原子通过同晶取代方式进入分子筛骨架，结晶度高，晶粒均匀。
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