基本解釋[地球科學(xué)]同位素相對(duì)分佈量同位素相對(duì)豐度詞組短語(yǔ)短語(yǔ)relative e isotopic abundance 同位素相對(duì)豐度abundance relative isotopic 相對(duì)同位素豐度relative isotopic abundance更多詞組專(zhuān)業(yè)釋義地球科學(xué)同位素相對(duì)分佈量同位素相對(duì)豐度