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摩擦几乎无处不在。在物质世界中,相互接触而又作相对运动的物体(含物体在空气中的运动)之间就有摩擦,在包括汽车、坦克、火炮、飞机、舰船等在内的所有机械装备中,装配在一起并作相对运动的零件之间的摩擦,会使零件表面产生磨损降低了零件的尺寸精度,恶化了零件的运行条件,进而招致零件失效,同时使机械效率和使用寿命降低。另外,还摩擦消耗了近1/3的能源。
Rubbing is almost everywhere. In the physical world, there is friction between objects in mutual contact and relative motion (including the movement of objects in the air). Of all the mechanical equipment including automobiles, tanks, artillery, aircraft, ships, etc., Friction between parts assembled and moving relative to each other causes wear on the part surface Reducing the dimensional accuracy of the part degrades the operating conditions of the part resulting in part failure while reducing mechanical efficiency and service life. In addition, nearly 1/3 of the energy is also consumed by friction.