Meanwhile, the change of the bed height does not affect the critical air velocity when the particle size of arenaceous quartz is fixed.

而在粒度一定的情况下，床层高度的变化不影响临界流化速度值。

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The experimental results indicate that the critical air velocity increases with the increase of the particle size of arenaceous quartz.

结果表明：临界流化速度随着粒度的增大而增大；

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