基本解釋射影表示詞組短語短語projective crossed representation 投射交叉表示Projective unitary representation 射影酉表示irreducible projective representation 不可約射影表示irreducible algebraic equation projective representation 不可約射影表示projective representation更多詞組專業(yè)釋義數(shù)學(xué)射影表示