流体

• There is no pressure gradient through the thickness of the film .
  贯穿流体膜厚度无压力梯度。
• In a single-species fluid, the subscript may be dropped .
  对于单组分流体，这个下标可以省略。
• The density p is that of the fluid escaping from the orifice .
  上式中P是从小孔喷出的流体密度。
• This method is suited to the measurement of irregular streams .
  这种方法适于不均匀流体的测量。
• The open rectangles represent typical elements of the ion fluid .
  空心的矩形表示典型的离子流体元。
• The rotameter is not satisfactory for fluids containing solids .
  这种流量计不适用于带有固体的流体。
• The light beam is scattered by small particles in the moving fluid .
  光束被流动流体中的微粒所散射。
• The simplest type of pressure gauge is the open-tube manometer .
  最简单的压力计，是开管流体压力计。
• Beyond the boundary layer, the motion is highly irregular .
  超出边界层以外，流体的流动非常没有规律。
• In fluids, forces of tension and shear can often be ignored .
  在流体中，张力和切力通常可以忽略不计。