同位素群
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group isotope 同位素群
isotope addition method group 同位素群
·2,447,543篇论文数据，部分数据来源于NoteExpress
Based on the research of isotope ratios of lead, sulfur, oxygen and carbon in the ores and rocks of this area, it is held that Qinglongcun Group serve as the source bed of gold.
通过对矿区矿石、岩石中铅、硫、氧同位素组成研究，查明青龙村群为金的矿源层。
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