短語詞組短語isotopic equilibrium ratio 同位素比isotopic abundance ratio 同位素豐度;同位素豐度比;又稱同位素豐度比isotopic carbon ratio 穩(wěn)定碳同位素比boron isotopic abundance ratio 同位素豐度比值Isotopic Abundance Ratio of Uranium 鈾同位素豐度比osmium isotopic ratio 鋨同位素比值isotopic ratio detail 同位素比值stable isotopic ratio 穩(wěn)定同位素比率Ce isotopic ratio Ce 同位素比值 返回 isotopic ratio