Four-Stroke Cycle四支点悬挂
four-stroke model四冲程
four-stroke motorcycle四冲程摩托车
Four-Stroke Dycle四行程引擎
four-stroke breathing四次划臂呼吸法
four-stroke oil摩托车专用四冲程油
four-stroke motorcycles四冲程摩托车
four-stroke cycl四冲程循环
four-stroke diesel四冲程柴油机
According to this we make sure which need to be changed in the four stroke engine, that is change its oil system and lubrication system in order to meet the need of our special vehicle, make sure steady power output.
根据这一情况确定了在一般四冲程发动机上需要改进的地方，即改变其燃油油路和滑油油路以适应防翻车的需要，保证稳定的动力输出。
参考来源 - 万向防翻特种车动力系统设计研究ADJ（形容词） relating to or designating an internal-combustion engine in which the piston makes four strokes for every explosion 四冲程的 (US and Canadian name four-cycle) → compare two-stroke