資料來源 : Free On-Line Dictionary of Computing

isomorphism class
     
         A collection of all the objects {isomorphic} to
        a given object.  Talking about the isomorphism class (of a
        {poset}, say) ensures that we will only consider its
        properties as a poset, and will not consider other incidental
        properties it happens to have.
     
        (1995-03-25)