carbon isotope composition

• 碳同位素组成

carbon isotope composition的用法和样例：

例句

1. This paper determined the sulfu risotopic composition of the Mianning REE deposit,Sichuan Province,China.
   分析了四川冕宁大型稀土矿床硫同位素组成。
2. The Anqing copper deposit has a complicated sulfur isotope composition ,which can not be explained by the variations of a single sulfur source or the physico-chemical conditions.
   安徽安庆铜矿床的硫同位素组成复杂，不能用单一硫源或物理化学条件的变化来解释。