进一步增加表观气速，平均液体速度无明显增加。
Further increase of the superficial gas velocity could not yield an additional increase in mean liquid velocity.
在管壁处液体速度近似为零，并在管中心处达到最大。
Liquid velocity is near zero at the pipe wall and increases to maximum at the pipe center.
曲线形状随液体速度、粘度、管子直径和管壁粗糙度而变化。
The shape of the curve would vary with liquid velocity, viscosity, pipe size, and pipe surface roughness.
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