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。
A simple and approximate method is worked out on changing working states to the characteristic of steam falling away from some back stages of a turbine in the working state of the little volume flow.
本文针对汽轮机末几级在小容积流量工况下产生脱流的特点，结合工程实例推导出一种简单近似的变工况核算方法。
With explosive increase of air traffic volume in China, how to carry out air traffic flow management becomes more urgent.
随着中国交通流量的不断增长，如何更有效地实施流量管理的问题日益突出。
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