英语词汇“isotopic abundance”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	isotopic abundance
释义	Isotopic Abundance Isotopic Abundance the relative number of atoms of the different isotopes of one chemical element. It is usually expressed as a percentage of the total of all the long-lived (having a half-life T > 3 × 10⁸ years) isotopes of a given element, on the average, either in nature or in some reference state, such as another planet or region. A precise measurement of the isotopic abundance is of great importance in determining the atomic masses of elements.
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Isotopic Abundance

Isotopic Abundance