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单词 fine structure
释义 fine structure
Closely spaced optical spectral lines arising from transitions between energy levels that are split by the vibrational or rotational motion of a molecule or by electron spin. They are visible only at high resolution. Hyperfine structure , visible only at very high resolution, results from the influence of the atomic nucleus on the allowed energy levels of the atom
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更新时间:2025/6/23 3:45:06