气泡尺寸和鼓泡频率随声压的增大而减小，随声波频率的增大先减小后增大。
The minimum fluidization velocity has a minimum value when the frequency of sound waves approached 150 Hz, whereas it decreased as the sound pressure level was increased at the same sound frequency.
气泡尺寸和鼓泡频率随声压的增大而减小，随声波频率的增大先减小后增大。
The minimum fluidization velocity has a minimum value when the frequency of sound waves approached 150 Hz, whereas it decreased as the sound pressure level was increased at the same sound frequency.
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