尽管另一些人，质疑层叠岩石化石是否是细菌活动的结果，但他们也想知道那些化石是否只是化学沉淀物。
Others, though, question whether fossil stromatolites really are the result of bacterial action, and wonder whether they might be chemical precipitates instead.
宁强陨石的岩石学、岩石化学及基质的化学成份。
Petrology, petrologic Chemistry, and Matrix Chemical Compositions of the Ningqiang Chondrite.
研究岩石风化过程中岩石化学成分的变化规律，对于进一步研究岩石的风化机理以及岩石的物理力学性质变化过程有着十分重要的意义。
To study the rule of change of rock chemical composition in the weathering process is very important for further research of weathering mechanism and change in rock's physics mechanics character.
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