短語詞組短語rolling ? friction 滾動摩擦rolling g friction 滾動摩擦rolling g friction torque 滾動摩擦力矩rolling E friction 滾動摩擦rolling friction force 滾動摩擦力rolling friction pairs 滾動摩擦副kinetic c rolling friction 運動滾動摩擦rolling friction wear 滾動摩擦磨損angle of rolling friction 滾動摩擦角 返回 rolling friction