以Hillert三维个体晶粒长大的速率方程为基础,重新求解了晶粒长大的连续方程.认为准稳态条件下晶粒尺寸的分布形式有多种,但其在形式上都表现为峰值偏左,与仿真结果的一致性证实了解析解的可靠性. Based on the rate equation of Hillert’s three-dimensional grain growth, the continuous equation of grain growth is solved again, and the distribution of grain size under quasi-steady state is considered to be many, but all of them show the peak in form Left-sided, consistent with the simulation results confirm the reliability of analytical solution.