Based on an analysis of the predicted volume and flow field of the smoke generated in case of fire, sets up a mathematical model and works out its numerical solution.

通过对火灾时烟气发生量及烟气流场的分析，建立了舞台空气幕计算的数学模型并求数值解。

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Therefore, in order to improve the performance of hydraulic servo valve, it is important to study the mathematical model and distribution of jet flow field.

因此，为了改善由射流前置级驱动的伺服阀的性能，研究伺服阀前置级射流流场的数学模型及分布规律是至关重要的。

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The flow field in liquid Wood's metal with centric gas bottom-blowing was predicted by a mathematical model.

本文用数学模型法预报了中心底吹气体搅拌的液态伍德合金流场。

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