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通过对门轴合页注入润滑油后转动时,摩擦阻力产生部位及摩擦阻力减小原因的定性分析,说明教科书将“使相互接触的表面隔开”视为减小摩擦力的方法是欠妥的。
Qualitative analysis of the causes of the frictional resistance and the reduction of the frictional resistance caused by the injection of lubricating oil into the hinge of the hinge of the door hinge shows that the textbook treats “separating the surfaces in contact with each other” as a method of reducing the friction due to Right