Twins or Multiplets 双胎或多胎
ground multiplets 基态多重
isotopic spin multiplets 同位旋多重线
Balandin theory of multiplets 巴兰金多重催化理论
infinite multiplets 无限多重谱线
N a set of closely spaced lines in a spectrum, resulting from small differences between the energy levels of atoms or molecules 多重谱线 [physics]
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