“K-A age”的概念、定义、翻译、参考文献-科学参考

单词	K-A age
释义	K-A age [`kā`ā` ´āj] ^GEOLOGY The radioactive age of a rock determined from the ratio of potassium-40 (⁴⁰K) to argon-40 (⁴⁰A) present in the rock.
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