流体流动边界不断向外扩展是低速非达西渗流压力波传播的特点。
The fluid flowing boundary extends outwards continuously is the feature of pressure propagation with low velocity Non Darcy percolation.
根据鼓泡塔内液相流体的流动特点，我们希望在鼓泡塔内加入了一定数量按照一定规律排列的挡板，能够减弱鼓泡塔的液相轴向返混。
According to the liquid flow characteristic of bubble column, we hope to decrease axial backmixing of the liquid by putting some baffles which have certain distribution rule in the bubble column.
由于尺度效应、表面效应等因素的影响，稀薄气体流动表现出自己的特点：流动涉及的表面积与体积之比增强、梯度参数效应，表面效应，流体极性等。
Some negligible factors in the classical fluid dynamics, such as, surface force, surface-volume ratio and the effects of gradient parameters, become very important for its study.
纳米磁流体是一种具有磁性的纳米材料，它具有液体的流动性和光学性质可调谐的特点，是一种新型的光学功能材料。
Magnetic fluid is a kind of nanostructured material possessing magnetism. It is a novel functional material in optical field, which has both the fluidity of liquid and the tunable optical properties.
纳米磁流体是一种具有磁性的纳米材料，它具有液体的流动性和光学性质可调谐的特点，是一种新型的光学功能材料。
Magnetic fluid is a kind of nanostructured material possessing magnetism. It is a novel functional material in optical field, which has both the fluidity of liquid and the tunable optical properties.
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