The development of the research of the Van der Waals force, the Coulomb force and the space resistance, which have an important influence on the agglomeration of the ultra-fine powders, is reviewed.
综述了对于超细粉体团聚有重要影响的范德华力、库仑力和空间阻力的研究进展。
The paper introduces the resistance reduction methods of van type vehicles-actively boundary layer control method and passive boundary layer control method.
介绍了厢式货车的减阻方法——主动控制边界层法和被动控制边界层法。
The paper introduces the resistance reduction methods of van type vehicles-actively boundary layer control method and passive boundary layer control method.
介绍了厢式货车的减阻方法——主动控制边界层法和被动控制边界层法。
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