&5S 1,则 8 q &5S q g q q ÷b8 1 g4/9 i i ,i i ,i i , q i i q,i q ,i q ,i q n 5, i 1, 4 3 g 2 4 2 g 3 4 g 4 g1 4 g1 4 g1 3 g 2 2 g 4 g 3 g 5 g 1 g 1 = = =  = = = = = 若 = 且 = 则