ࡱ > 5 7 4 9 R , bjbj 10 l , l 9 " t t t t t t t t $ [ { 2 t t t t t t t t R t t t N < < t h ]{ < < | 0 9 < < x ɜ 1 D | t ` XX x <\ ܴp, t ) ( 0| E XX Dij D L t iȲ ( ) 1 l = 0 + % 0 0 Dij 0 ( ) + ( 1 ) + Ǎ ( ) % [ % 0 a ( ) ] + [ % 0 a( ) ( (] ) 1 . tij Ȱ pXiȲ 2 . ܭY 9 p 1 m Xp | @ \0 7 | tǴ tX| 0`