In other words, frictional work is not completely recoverable . 換句話說,摩擦力的功不能完全回收。
The work rate of the metal in pits was considered to be the frictional work rate , and when the work rate was great than the work rate to produce shear flow at the interface between the metal and tool , the friction was thought to change into sticky friction from slide friction 摩擦功率等于此部分金屬的變形功率,當它的變形功率大于在界面產生剪切流動的功率時,摩擦由滑動摩擦轉變為粘著摩擦。
The work rate of the metal in pits was considered to be the frictional work rate , and when the work rate was great than the work rate to produce shear flow at the interface between the metal and tool , the friction was thought to change into sticky friction from slide friction 摩擦功率等于此部分金屬的變形功率,當它的變形功率大于在界面產生剪切流動的功率時,摩擦由滑動摩擦轉變為粘著摩擦。