铲运机发动机起动开关
scraper engine start switch
拖拉机发动机关停手柄
tractor engine shutdown handle
拖拉机发动机出厂编号
tractor engine serial number
拖拉机发动机调速器控制
tractor engine governor control
拖拉机发动机冷却液液面
tractor engine coolant level
拖拉机发动机性能
tractor engine performance
拖拉机发动机转速降低
tractor engine rpm decrease