or 1 a 706 re Or roe (3)物理方程不变: E (oe-uo) (4-3) 2(1+) E(3)物理方程不变: − = + = = + = = 0 1 r u r u r u r u u r r u r r r r r r + = = = − = − r r r r r r G E E E 2(1 ) ( ) 1 ( ) 1 (4-3)