气体的碳、氦同位素资料表明其来自长英质岩浆体系；
C and O isotopic data demonstrate that these gases are derived from the felsic magma system;
锎一种合成元素，由氦同位素轰击锔可得到微量的这种元素。
A synthetic element produced in trace quantities by helium isotope bombardment of curium.
对该地区新生代玄武岩中幔源包体和高压巨晶的氦同位素进行了初步研究。
Helium isotope compositions of the mantle-derived xenoliths and megacrysts from the Cenozoic basalts in Hannuoba were measured.
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