V2+U( 2M =m2m(ml2+mN),(x,xN)=Φ(元,X 2Mx2 Vx+UCrDJap(,X E7①(x,X)( , ) ( )] ( , ) 2 2 [ /( ), ( , ) ( , ) ( ) 2 2 2 2 2 2 2 2 2 2 E x X U x x X M m m m m x x x X U x M H T X x e N e N e N X x               =  −  −  +  = +  =  = −  −  +   