大碰撞假说能够解释月质学的许多方面内容，包括月球核心的大小、密度、月岩的同位素组分等。
The Giant Impact Theory explains many aspects of lunar geology including the size of the Moon'score and the density and isotopic composition of moon rocks.
本文研究了张家口南部地区温泉（井）水的氢氧稳定同位素组成及溶解气体组分特征。
The hydrogen and oxygen stable isotopic composition and dissolved gas components of the hot spring (well) water in the southern area of Zhangjiakou are studied.
本文根据组分及甲烷同系物的碳氢同位素确定柴达木盆地东部第四系天然气为生物气类型；
The Quaternary natural gas in the east of Qaidam basin is determined to be biogenic gas through a studying of gas composition, carbon and hydrogen isotopes in methane.
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