不是講了其他很多放射元素無法測量。特別是還有錒係元素。半衰期很長的也很難測量。

來源: 蘭德士於 2023-08-26 22:43:36 [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.