在实际操作过程中，选择合理的床层静止高度和气流脉动频率对提高传热系数有利。
In practice, choosing the static height of the bed layer and the frequency of the gas pulsation properly can increase the heat transfer coefficient.
用三种不同直径的浆态鼓泡塔研究气速、塔径、固相浓度、静止床层高度和气体分布器等对气含率的影响。
The variation of gas holdup with gas velocity, column diameter, solid concentration, static bed height and gas distributor was studied in slurry bubble columns with three different diameters.
气流温度是影响干燥过程降水幅度的重要参数，床层静止高度及脉动频率对干燥过程的影响很小。
The air temperature is the most important parameter in the relationship of current humidity vs drying time. Static bed height as well as pulsation frequency has some influence on the drying process.
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