同位素比率质谱仪 IRMS ; Isotope Ratio Mass Spectrometer ; Thermo Delta V advantage ; Finnigan MAT Delta V advantage
稳定碳同位素比率法 Stable carbon isotope ratio method
母子同位素比率 age of ratio
氧同位素比率 oxygen isotope ratio
稳定同位素比率 stable isotopic ratio
稳定性碳同位素比率 stable carbon isotope ratios
同位素丰度比率 ratio isotopic abundance
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.
同位素比率直接用于比较各种石油或天然气。
The isotope ratio is directly used for comparing oils or gases.
其中一个方法判断生活的来源是通过测量气体同位素比率。
One way to tell if life is the source of the gas is by measuring isotope ratios.
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