两栖履带式装甲车辆
amphibious tracked armored vehicle
履带式装载机的工作
track-type loader operation
履带式装载机最终传动室
track-type loader final drive compartment
轮式和履带式装备
wheeled and tracked equipments
履带式拖拉机差速转向
track-type tractor differential steering
履带式拖拉机维修手册
track-type tractor service manual