Uc(n Q U.(n) U Vn2+02(m2-12 U 4n2+02m2-1=0 2越高,0Lm和wcm越靠近。 2 22 2 ( ) ( 1) UC Q U Q K K K 2 22 2 ( ) ( 1) UC Q U Q K K K [ ( 1) ] 0 2 2 2 2 K K K Q d d Q䎺儈ˈZLm઼ZCm 䎺䶐䘁Z0DŽ 2 2 2 2 ( ) 1 1 (1 ) UL Q U Q K K K 2 2 2 2 ( ) 1 1 (1 ) UL Q U Q K K K 2 2 2 2 1 1 [ (1- ) ] 0 d Q dKK K