边界层阻力：风速越大，阻力越小。一般为1~2秒/厘米
发现边界层阻力不仅和其厚度有关，还和其形成过程有关。
It has been found that the boundary layer resistance is related with not only its thickness but also its formation process.
大部分的阻力产生于混乱和不可预知的自然边界层之间在物体和气流之间。
Most of this drag is a result of the chaotic and unpredictable nature of the boundary layer - the layer immediately between the object and the airflow.
离心式固液两相流泵叶片的边界层的理论分析，可以为分析流体在叶片表面沿程阻力提供基础，进一步也可以为确定叶片型线提供理论依据。
The theoretical analysis of boundary layer in vane of centrifugal two-phase flow pump may provide a basis for flow drag in vane surface and a theoretical evidence to determine vane curve.
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