Last Updated：2025/11/21
Radioactive isotopes often have very different half-lives, which determine how long they remain hazardous.
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Radioactive isotopes often have very different half-lives, which determine how long they remain hazardous.
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放射性同位体はしばしば非常に異なる半減期を持ち、それがどれくらい長く危険な状態で残るかを決定します。
