trace element ratios 微量元素比值
Therefore, the element ratios can be applied to the study of trace element characteristics of rocks in the tholeiite source region.
因此研究拉斑玄武岩源区岩石中的微量元素特征可以采用元素比值的方法。
After all, the Sun has many more atoms of any element, say iron, than does a meteorite specimen, but the ratios of iron to silicon in the two kinds of matter might be comparable.
毕竟,太阳中任何元素的原子,比如说铁,都比陨石标本的原子要多得多,但这两种物质中铁和硅的比例可能是可以比较的。
By analyzing ratios of isotopes — variations of the same element with a different mass - he can learn things about the environment they lived in, such as temperature and salinity.
通过分析其中的同位素(同一种元素拥有不同的质量)比例,他可以了解这些菊石所生活的环境特征,如温度和盐度。
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