观测点粒子几率 P(D, t)Y(D,t (p+gA/c)d!/h (P+gA/c) dl OFD e OGD 2+2 cosS )/h )/h OFD OGD OFD DGO P+qA/c) dl观测点粒子几率 (p qA c) dl e e P D t D t OFD OGD OFD DGO i p qA c dl i p qA c dl OFD OGD             = +  = − = + = +  +        +  +  / ( )/ ( )/ 2 2cos ~ ( , ) ~ ( , ) 2 ( / ) / ( / ) 2  