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单词
n-shell
释义
WordReference Random House Unabridged Dictionary of American English © 2024
N-shell
(en
′
shel′),
USA pronunciation
n.
[
Physics.
]
Physics
the fourth shell of electrons surrounding the nucleus of an atom and containing, when filled, 32 electrons having principal quantum number 4. Cf.
K-shell, L-shell, M-shell.
1920–25
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更新时间:2025/12/10 1:32:31