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- 酉ESPRITumtary ESPRIT
- 酉10th earthly branch
- 酉時period of the day from 5 p.m. to 7 p.m
- 酉式unitary expression
- 酉變換unitary transformation
- 酉場論unitary field theory
- 酉幾何unitary geometry
- 酉聯絡unitary connection
- 酉切叢unitary tangent bundle
- 酉辛群unitary symplectic group
- 酉子群unitary subgroup
- 酉朕絡unitary connection
- 酉水Youshui
- 不可約酉表示irreducible unitary representation
- 特殊酉群unitary modular group
- 廣義酉群extended unitary group
- 無限酉群infinite unitary group
- 酉變換群unitary transformation group
- 酉不變數unitary invariant
- 酉叢unitary bundle
