“U coefficient”的概念、定义、翻译、参考文献-科学参考

单词	U coefficient
释义	U coefficient [`yü ´kō·i´fish·ǝnt] ^{QUANTUM MECHANICS} A coefficient that appears in the transformation between modes of coupling eigenfunctions of three angular momenta; it is equal to the product of the Racah coefficient and [(2j₁₂ + 1) (2j₂₃ + 1)]^1/2, where j₁₂ and j₂₃ are the intermediate angular momenta in the respective modes.
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