基本解释[数学]不可约对角占优矩阵词组短语短语weak irreducible diagonally dominant matrix 弱不可约对角占优矩阵block irreducible diagonally dominant matrix 块不可约对角占优矩阵irreducible diagonally dominant matrix更多词组专业释义数学不可约对角占优矩阵