Because a radioactive form of argon is produced by decay of a naturally occurring radioactive potassium isotope, it can be used to date rocks and samples more than 100,000 years old.
因为它是稀有天然放射性同位素钾衰变而产生的,所以可以用来测定十万年以上的岩石年龄和采样。
Because a radioactive form of argon is produced by decay of a naturally occurring radioactive potassium isotope, it can be used to date rocks and samples more than 100,000 years old.
因为它是稀有天然放射性同位素钾衰变而产生的,所以可以用来测定十万年以上的岩石年龄和采样。
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