司机制动阀手柄的英文：
engineer's brake valve handle
n. 工程师，技师；轮机手；机械师；专家
v. 操纵；策划；设计；建造
- He is an engineer.
他是位工程师。 - The engine died.
引擎突然熄火了。 - They are engineering a bridge.
他们正在建造一座桥。
n. 阻碍；闸，刹车
v. 刹车
- brake an automobile
煞住汽车 - The main brake system utilizes either a band brake or a hydraulic disc brake.
主绞车的主刹车系统既可采用带式刹车，亦可采用液压盘式刹车。 - Chinese brake, spider brake (pteris multifida)
凤尾蕨
n. 阀门；瓣膜；真空管
v. 装阀于；以活门调节
- Valve Disadvantages: The valve is difficult to close and requires the operator to double close the valve.
阀门的缺点:阀门难以关闭，要求操作者二次关闭阀门。 - pilot valve governor
带伺服电动机的调节器辅助调速器 - The valve has jammed shut.
阀门给卡住了打不开。