设计出实验圆柱，并对微脉动信号提取中的应变片粘贴，应变仪调试等技术做了研究；
Design the cylinders, do the researches on pasting the strain gauge and debugging the instruments;
因而可以利用壁面压强脉动信号的分析结果间接反映经过边界层的相干结构的时间特征。
Therefore the analysis results of time scale of fluctuating wall pressure can be used to indicate the time features of coherent structure of the turbulent boundary layer.
根据压强脉动信号波形和频域的分析结果，研究了三相流化床不同空间位置压强的脉动特征。
Accordimg to the results of wave form and frequency domain analyses of pressure fluctuation signals, characteristics of pressure fluctuation at different space locations were discussed.
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