为此，对浮选柱进行了增设脉动磁系和稳流管的改进。
For this, improvement was made on the flotation column by adding a pulsating magnetic system and flow-stabilizing pipe.
以三方柱模型实验结果为依据，讨论了建筑物表面风压脉动的极值分布情况。
In this paper, based on the experiments of flow over three square cylinders, the peak values of the fluctuating pressure on the surface were discussed.
利用有限元法求解声学波动方程，建立了管内气流的有限元运动方程，计算出管内气柱的固有频率和气流压力脉动。
The FEM equation of acoustic wave is used to calculate the air-current natural frequency and pressure pulsation in the pipeline.
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