飞轮一种用于减小拐弯时速度变化和每分钟转数的粗边转轮，如减小机械在运行或装载中的变化 A heavy-rimmed rotating wheel used to minimize variations in angular velocity and revolutions per minute, as in a machine subject to fluctuation in drive and load.
旋转计数器，里程计一种用来表明移动距离的测量轮子转数的仪器 An instrument that records the revolutions of a wheel to indicate distance traveled.
