The team then measured the rocks' water signatures through the use of secondary ion mass spectrometry, which could allow researchers to tell where and when the lunar water originated.
小组通过使用离子质谱分析法测量了这些岩石的水的鲜明特征之后，可以分析出月球上水起源的时间和地点。
2
In the southern North China, the lower Paleozoic source rocks reached primary maturation at late Triassic and the secondary hydrocarbon generation did not occur at the Cenozoic.
南华北地区下古生界烃源岩在晚三叠世达到早成熟阶段，新生代基本未发生二次生烃作用。
3
The compactionand secondary enlargement of quartz lead to the great decrease of primary porosity of clastic rocks, and dissolution is contributed to the formation of secondary pore space.