It is well known that the size and performance of suspension system for the motor wheel truck are dependent on the type of working medium used for the supporting cylinder.
电动轮汽车悬挂系统的尺寸大小和性能好坏，取决于它的支撑缸所采用的工作介质的类型。
2
In the drum-and-shoe type, there is a wheel Brake cylinder with two pistons.