Influence of each factor on blade inlet flow of a large vertical axial-flow pump is analyzed, formation mechanism of flow field in the cross section is studied.
分析各因素对大型立式轴流泵叶片进口流态的影响，研究该断面流场的形成机理。
Owing to its native feature and the influence by artificial exploitation, the shallow groundwater is vertical cross-flow supplement to medium layer groundwater.
由于含水系统本身特点及人工开采影响，浅层水对中层地下水垂直越流补给。
The velocity amplitude distributions of the oscillatory flow outside the boundary layer are measured at seven cross-sections along the horizontal, the vertical, and the bent sections respectively.
对于水平直管段上底面及下底面各三个截面，测量了边界层内振荡流速的振幅分布及相位分布。
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