阐述了在机械工程及液压传动领域内,存在着的严重磨损问题。为了减小磨损,相对运动的零部件之间必然要有充分的润滑,即油膜。文中具体介绍了油膜的产生及作用;磨损的原因及类型,通过间隙的流量计算;压力场产生的原因及间隙的稳定性等问题。 Expatiates the serious abrasion problems in the field of mechanical engineering and hydraulic transmission. In order to reduce wear and tear, the relative movement between the parts must have adequate lubrication, that is, oil film. The paper introduces the production and function of oil film, the reasons and types of wear, the calculation of the flow through the gap, the reason of the pressure field and the stability of the gap.