CSCO:i2,元:,i2,i2} Common eigenstates(2ji+)(2j2+1)-fold 4m远m2)=1m)m2)-≤m≤, 2≤m2S/2} { , , (2 1)(2 1) } ˆ , ˆ , ˆ , ˆ : { 2 2 2 1 1 2 2 1 1 2 2 1 1 1 1 2 2 2 1 2 2 1 j m j j m j m j m j m j m j Common eigenstates j j fold CSCO j j j j z z −    −   + + −  