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单词
k-shell
释义
WordReference Random House Unabridged Dictionary of American English © 2024
K-shell
(kā
′
shel′),
USA pronunciation
n.
[
Physics.
]
Physics
the first shell of electrons surrounding the nucleus of an atom and containing, when filled, two electrons having principal quantum number 1. Cf.
L-shell, M-shell, N-shell.
1965–70
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更新时间:2025/10/14 20:38:30