短語(yǔ)詞組短語(yǔ)commutable bill 可觝償?shù)钠睋?jù)commutable number c 數(shù)commutable matrices 可交換矩陣non commutable 不可互換的residually commutable group 賸餘交換群Non commutable disease 非傳染性疾病anti -commutable matrix space to A 與A反可換的矩陣空間cross -boundary spread of commutable diseases 傳染病跨界傳播 返回 commutable