It is important to avoid the use of uranium compounds of unspecified isotopic composition.

要避免使用那种非专用的同位素成份的铀化合物.

辞典例句

This paper determined the sulfur isotopic composition of the Mianning REE deposit, Sichuan Province , China.

分析了四川冕宁大型稀土矿床硫同位素组成.

互联网

Lithium isotopic composition of clinopyroxene megacrysts from N ü shan has been analyzed by means of ion probe.

应用离子探针技术测定了一组女山单斜辉石巨晶的锂同位素组成.

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