The composition of oxygen isotope is a good tool to trace the origin and formation environment of sulfate.
氧同位素组成是一个非常有效的示踪硫酸盐的起源和形成环境的工具。
A synthetic element produced in trace quantities by helium isotope bombardment of curium.
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。
According to the characteristics of trace elements and isotope, the source of the basalt is similar to the OIB source.
微量元素和同位素特征显示，玄武岩起源于与洋岛玄武岩源区相似的富集地幔源。
Moreover, as one of major ore-forming elements, copper isotope composition can directly trace ore-metal source and ore-forming process.
并且，由于铜是主要成矿元素之一，所以铜同位素对于成矿物质来源和成矿过程的示踪更为直接。
And as growing grapes absorb carbon dioxide, they take in trace amounts of the heavier carbon isotope-which eventually show up in the wine.
生长中的葡萄会吸收二氧化碳，也就会吸收微量质量更重的碳同位素，这种吸收最终会在酒中表现出来。
A radioactive transuranic element in the actinide series, artificially produced in trace amounts. Its longest-lived isotope is No255 with a half-life of3 minutes. Atomic number102.
锘在锕类元素中的一种放射性超铀元素，人工微量制造，其最长寿命的同位素是锘255，其。
A radioactive transuranic element in the actinide series, artificially produced in trace amounts. Its longest-lived isotope is No255 with a half-life of3 minutes. Atomic number102.
锘在锕类元素中的一种放射性超铀元素，人工微量制造，其最长寿命的同位素是锘255，其。
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