在海洋的大部分区域,海床都由厚重的粘土构成,最适合吸收放射性衰变产物。
Inlarge parts of the ocean, the seafloor is made of thick, heavy clay, perfectfor absorbing radioactive decay products.
氡是天然放射性惰性气体,是铀系衰变链中的一个衰变产物。
As a product from the uranium disintegration, radon is a natural radioactive idle gas.
Alpha particles are these helium nuclei, and they are the result of radioactive decay.
阿尔法粒子是氦核,它们是放射性衰变的产物。
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