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来源:雅诚德英语网
It is a global record: there is remarkably little variation in isotope ratios in sedimentary specimens taken from different continental locations.
这是一个全球性的记录:在取自不同大陆位置的沉积标本中,同位素比率的变化非常小。
It is a global record: there is remarkably little variation in isotope ratios in sedimentary specimens taken from different continental locations.
这是一个全球性的记录:在取自不同大陆位置的沉积标本中,同位素比率的变化非常小。