The methods of research are numerical analysis and approximate analytic solution.
研究方法有数值法和近似解两种。
Based on the approximate analytic solution, the choked characteristics of flow in adiabatic capillary tubes are theoretically analyzed.
基于近似解，对绝热毛细管壅塞流动特性进行了理论分析。
In this paper, a formula of approximate analytic solution of subharmonic resonant overvoltage is established according to the theory of region analysis.
本文以区域分析理论为工具，提出分次谐波共振过电压的一个近似解析公式。
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