核污水的危害有多大？碘盐能预防吗？暴露在核辐射污染时间过久或者超过容忍剂量会产生哪些症状？放射性元素需要多久才能被环境自

来源: ctz246 于 2023-09-01 17:01:56 [旧帖] [给我悄悄话] 本文已被阅读：次

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