abundances
英[ə'bʌndənsɪz]
美[ə'bʌndənsɪz]
- 丰度
详细释义
名词 abundance:
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the property of a more than adequate quantity or supply
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(physics) the ratio of the number of atoms of a specific isotope of an element to the total number of isotopes present
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(chemistry) the ratio of the total mass of an element in the earth's crust to the total mass of the earth's crust; expressed as a percentage or in parts per million
双语例句
- Would observations of the abundances of chemical elements lead cosmologists of the distant future to a knowledge of the big bang?
对化学元素丰度的观测，是否能够使遥远未来的宇宙学家获得关于大霹雳的知识呢？
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