abundance ratio ratio

• 丰度

abundance ratio ratio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。
2. The abundance and availability of water and nutrients in a soil ecosystem determine its fertility.
   土壤生态系统中水分和养分的丰度和有效性决定土壤的肥力。