...验；平均风压系数；脉动风压系数；升力系数 [gap=1124]Keywords: long-span roof; wind tunnel test; mean pressure coefficient; fluctuating pressure coefficient; lift coefficient ..
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Parameters are fitted to vapor pressure, density and mean ionic activity coefficient data.
参数由拟合蒸汽压、密度和离子平均活度系数数据获得。
The mean pressure, mean intensity, and the coefficient of variation of amplitude of the signal propagated in wave-guide were obtained in this paper.
本文得到了在波导传播中的无方向性点源的平均声压、平均强度和声信号振幅的起伏率。
When under the same axle load, if the wheel rolling speed gets higher, the adhesion coefficient declines as the ratio of the mean asperities contact pressure to the total pressure becomes smaller.
研究发现：相同轴重下，滚动速度越大，粗糙峰接触压力与总压力的比值越小，导致轮轨之间的粘着系数下降；
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