理论解释(续) Stochastic-Averaged Normal Form E E dr=l ur+C, r+oIdt+dw, aVr √ E d0=0+C rIdt+ dw3 2 0 2 r r i dr r C r dt dW Vr V d C r dt dW r V           = + + +     = + +     Stochastic-Averaged Normal Form 理论解释（续）