1.It quickly became clear, however, that the isotopic composition of meteorites differed not at all from that of the Earth itself.
然而事情很快清楚了，陨石中的同位素比例与地球自身没有什么不同。
2.The trick they used to do this was to look at the isotopic composition of the oxygen in the wood of local trees.
他们所使用的办法是观测当地树木的木材中的氧同位素组成（isotopiccomposition）。
3.The ideal choice, when isotopic composition is used to investigate the source of copper ore, would seem to be copper itself.
当同位素构成被用来研究铜矿石的来源时，理想的选择似乎是铜本身。
4.The osmium isotopic compositions and model age of mantle peridotite xenoliths from Jiangsu-Anhui area and their geological significance.
苏皖地区幔源橄榄岩捕虏体的锇同位素组成、模式年龄及其意义。
5.The ore and the magma share similar lead isotopic features which suggests a close relations between them.
矿石和岩浆岩具有非常相似的铅同位素组成，暗示了二者的亲缘关系。
6.Inorganic Mass Spectrometry is preferably used each time extremely low concentrations and isotopic abundance are to be determined.
每当测定非常低的浓度和同位素丰度时总是首先使用无机质谱法。
7.Up to now, there are no systematic geochemical studies and isotopic age for the Zhuanghe gold deposit, eastern Liaoning.
到目前为止，对辽宁庄河金矿尚没有做过系统的矿床地球化学和同位素年代学的研究。
8.Therefore, development of isotopic analytical techniques is always a major task of study on isotopic geochemistry.
因此发展同位素测试技术始终是同位素地球化学研究的一个主要方面。
9.This paper, combined with previous data, briefly summarizes the results of isotopic studies of these deposits.
本文结合前人的资料，对这些矿床的同位素研究成果作一概括性总结。
10.Isotopic response" describes the occurrence of a new disorder at the site of another, unrelated, and already healed skin disease.
“同位素的反应”，叙述了发生新的疾病在现场的另一无关，并已治愈的皮肤疾病。