transitional regime three-dimensional flow 过渡区三维流动
transitional flow regime
过渡流态
以上为机器翻译结果，长、整句建议使用 人工翻译 。
With increasing of superficial gas velocities, the liquid flow regime was changed from homogeneous to transitional and radial gradient of axial liquid velocity was rather small.
且当表观气速增大，初始流体流动处于由均匀流型向过渡流型的转变，轴向液体速度在径向的梯度非常小；
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