对床体壁面压力波动信号进行了统计、频谱及自相关性分析。
The statistics analysis, frequency analysis and correlation analysis were made with the wall pressure fluctuations signals.
结果表明：气泡是影响分选精度的重要因素，其体积分率的变化与床层密度波动密切相关。
The result shows that the bubble is an important factor influencing coal separation, and the variation of its volume fraction is closely related to the variation of density of ADMFB.
在动床河工模型试验中，需要对水位波动进行实时和自动化的测量。
In mobile bed experiments, the measurement of water level needs to be real-time and automatic.
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