两相流不稳定性理论分析方法可以分为两大类：一类是数值解析法，另一类是近似分析法。
Theoretical approach of two-phase flow instability can be divided into two categories: numerical analysis and approximation analysis.
用蒙特·卡洛法及数值解析法对电荷中和、电流中和过程进行了模拟计算并解释了实验结果。
Simulations of charge neutralization using Monte-Carlo and current neutralization process using numerical analysis have been done, and explanations of experimental results have also been made.
KOVATS方法是预测泵特性的传统方法，本文对其加以改进，用叶片尖端间隙数值解析法预测其中的容积效率。
A · DE · KOVATS method is a traditional method for forecasting the characteristics of pump. It has been improved in this paper.
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