表达式71: left brace, "a" greater than negative 0.5 : polygon left parenthesis, "A" Subscript, 11 , Baseline , "A" Subscript, 21 , Baseline , "B" Subscript, 32 , Baseline , "B" Subscript, 31 , Baseline , right parenthesis , right bracea>−0.5:polygonA11,A21,B32,B31
71
表达式72: left brace, "a" greater than negative 0.5 : polygon left parenthesis, "B" Subscript, 11 , Baseline , "B" Subscript, 41 , Baseline , "B" Subscript, 32 , Baseline , "A" Subscript, 31 , Baseline , right parenthesis , right bracea>−0.5:polygonB11,B41,B32,A31
72
表达式73: polygon left parenthesis, "A" Subscript, 11 , Baseline , "A" Subscript, 14 , Baseline , "B" Subscript, 14 , Baseline , "B" Subscript, 11 , Baseline , right parenthesispolygonA11,A14,B14,B11
73
表达式74: left brace, "a" greater than negative 0.5 : polygon left parenthesis, "B" Subscript, 31 , Baseline , "B" Subscript, 32 , Baseline , right parenthesis , right bracea>−0.5:polygonB31,B32
74
表达式75: left brace, "a" greater than negative 0.5 : polygon left parenthesis, "B" Subscript, 32 , Baseline , "A" Subscript, 31 , Baseline , right parenthesis , right bracea>−0.5:polygonB32,A31