isotopic abundance

• 同位素丰富度,同位素丰度,同位素分丰度

isotopic abundance的用法和样例：

例句

1. The isotopic abundance ratio and content are determined with isotopic mass-spectrometry.
   文章用同位素质谱法测定了辐照堆元件铀的同位素丰度比和含量。