The study used relatively small values of superficial gas velocity. 這項研究采用相當小的表觀(guān)氣速。
The average particle velocity and concentration for the flotsam and the jetsam were unequal in the radial and axial directions. 隨著(zhù)表觀(guān)氣速的增大，顆粒濃度沿徑向和床高分布趨于均勻。
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