特殊用法break-in scuffing1.试运转时(表面)的磨伤[擦伤]cold scuffing1.(活塞环与汽缸面)冷发动机工作时的磨损; 低温磨损engine scuffing1.发动机拉缸[磨损]piston ring scuffing1.活塞环磨损[擦伤]scuffing of cylinder bore1.气缸镜面擦伤, 拉缸