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溶解、沉淀等工艺过程中，两相非均匀系统的临界计算是较难算准的问题。用常规的一些计算方法所得结果偏差较大。本文用ＭＣＮＰ蒙特卡洛程序对一系列两相非均匀系统的基准实验进行了计算分析，取得了较好的结果，表明点截面蒙特卡洛方法是处理这类问题的有效途径
In the process of dissolution, precipitation and so on, the critical calculation of two-phase non-uniform system is more difficult to calculate. The results obtained by some conventional calculation methods have large deviations. In this paper, MCNP Monte Carlo program for a series of two-phase non-uniform system of benchmark experiments were calculated and achieved good results, indicating that the point cross-section Monte Carlo method is an effective way to deal with such problems