If there is a bulk mixing of the layers of gas in the tube by mechanical stirring or because of a density gradient, mass transfer occurs primarily by the mechanism of forced or natural convection.
如果是受到机械式的搅拌或者是密度梯度发生了变化而使得管中有大量的分层的气体，那么传递就主要通过强制对流或自然对流而发生。
Interference with a new coating process, than the average gradient film better performance vacuum tube collector.
采用全新干涉镀膜工艺，比普通渐变膜真空管集热性能更好。
The effects on the underwater sound attenuation by the thickness and concentration gradient of polymers were measured in a sound tube at different frequency during the polymers dissolution process.
文中详细研究了梯度高分子溶液在不同频率下，聚合物厚度及梯度结构的变化对反射声衰减效果的影响。
While an incompressible liquid flows through a rotating inclined-tube with a constant pressure gradient the secondary flow due to Coriolis Force appears on cross section of the tube.
流体在压差作用下，流经绕与中心线成任意角的转轴匀速旋转的圆管时，由于哥氏力的作用，垂直于中心线的截面内将产生二次流。
Most of the tunnels have one tube with two lanes, but some tunnels have an extra lane when the gradient is more than 6 %.
大多数条海底公路隧道是单洞双线，但是当坡度大于6%时，有些隧道就增加一条线。
Most of the tunnels have one tube with two lanes, but some tunnels have an extra lane when the gradient is more than 6 %.
大多数条海底公路隧道是单洞双线，但是当坡度大于6%时，有些隧道就增加一条线。
应用推荐