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单词
fine structure
释义
WordReference Random House Unabridged Dictionary of American English © 2024
fine
′
struc
′
ture
(fīn),
USA pronunciation
[
Physics.
]
a group of lines that are observed in the spectra of certain elements, as hydrogen, and that are caused by various couplings of the azimuthal quantum number and the angular momentum quantum number. Cf.
hyperfine structure.
1915–20
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更新时间:2025/9/19 22:33:42