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单词
uranium 238
释义
WordReference Random House Unabridged Dictionary of American English © 2024
uranium 238,
[
Chem.
]
Chemistry
the radioactive uranium isotope having a mass number 238, comprising 99.28 percent of natural uranium: used chiefly in nuclear reactors as a source of the fissionable isotope plutonium 239. Also called
U-238, U 238.
1940–45
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fine structure
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fine-toothed comb
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fingal's cave
finger
fingerboard
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finger hole
fingering
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更新时间:2025/7/24 2:57:26