一个比较笼统的名词，指样品中某元素各同位素的相对含量。它可以用丰度表示，也可以用比值或δ值表示。
天然同位素组成 natural isotopic composition ; composition natural isotopic
全岩同位素组成 bulk isotope composition
原始同位素组成 initial isotopic composition
铅同位素组成 Pb isotopic composition
同位素组成等值线图 plot of isotope composition contours
同位素组成涨落 isotope abundance variation
同位素组成频率图 frequency distribution diagram of isotopecomposition
稳定碳同位素组成 stable carbon isotope composition
煤的硫、氢同位素组成明显地受环境的影响。
Sulphur and hydrogen isotope composition of coal are evidently effected by environment.
通过分析该时期植物腊的碳氢分子同位素组成。
By analysing the isotopic composition of hydrocarbon molecules from plant waxes of the period.
根据片钠铝石稳定同位素组成，对比分析片钠铝石的碳来源。
The origin of dawsonite is emphatically contrasted and analyzed by stable isotope composition of dawsonite.
应用推荐