氩同位素分馏
Argon isotopic fractionation
氩同位素组成
argon isotopic composition
氦氩碳氧同位素
Carbon and oxygen isotope
argon
helium
过渡族金属元素同位素
transition metal isotopes
同位素位移反常[现象]
isotope-shift anomaly (=isotopic shift anomaly
同位素位移体积效应
volume effect of isotope shift
volume effects of isotope shift
~(15)N的同位素稀释法
15)N isotopic pool dilution
~(15)N同位素稀释法
15N isotope dilution method
symbioticdinitrogenfixation