there is an argument to express them in ground level abundance of the respective elements. 有理由把它们用相应元素得地平丰度来表示。
this instrument can be used for gas analysis and determine of isotopic abundance of light elements. 此仪器可用于气体分析以及轻元素的同位素丰度测定。
the distribution and abundance of chemical elements in different parts of navel orange in fengjie county, china 奉节脐橙不同器官元素含量分布特征
the elemental geochemistry characteristics indicate that elements abundance is controlled seriously by grain size of sediment. 元素地球化学特征表明，元素的丰度受沉积物粒度控制明显。
evaluation on the condition of abundance or deficiency of the nutrient elements in soils and grape plants in dazeshan grape producing area 山东大泽山葡萄产地土壤及植株中营养元素丰缺状况评价