In the second part , a method studying stochastic transition which is the master equation method is introduced , and explicit solutions of velocity v and diffusion constant d of the steady state are obtained when a particle hops among a dimensional and periodic n states 第二部分介紹了一種研究隨機躍遷的方法?主方程方法,著重推導了粒子做一維周期性n態隨機躍遷時達到穩態的速度、擴散系數的一般表達式。