尸O + X op,x Re [/(+-, M Ox O(1)+O(1)= 2 O(1)+m[O()+O(∞2) Re)] 1 [ (1) ( Re 1 (1) 1 (1) (1) 2 2   O O O M O O + + + =   )] ' ' ' [ ( ' Re ' 1 ' ' ' ' ' ' ' ' ' 2 x u x v x y p M y u v x u u   +     +  −  =   +        