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单词
neptunium decay series
释义
neptunium decay series
neptunium decay series
[
nep′tü·nē·əm di′kā ‚sir·ēz
]
(chemistry)
Little-known radioactive elements with short lives; produced as successive series of decreasing atomic weight when uranium-237 and plutonium-241 decay radioactively through neptunium-237 to bismuth-209.
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更新时间:2026/4/17 7:09:17