Mechanical Brakes are the most common; they dissipate the kinetic energy as heat generated by mechanical friction Between a rotating drum or disk and a stationary friction element.

• 机械制动器最普遍,它们通过机械方式使旋转金属鼓(或盘)与固定摩擦件接触,产生机械性摩擦,以热的形式消耗动能。