活塞的英文：
piston
valve

参考例句：
  • The connecting-rod is attached to the piston by the piston pin.
    连杆与活塞的连接是采用活塞销。
  • free - piston compressor
    自由活塞压缩机
  • A large, valved, brass wind instrument with a bass pitch.
    大型带活塞的低音铜管乐器。
  • Power plant is a power of 140 hp piston engine.
    动力装置是一台功率140马力的活塞发动机。
  • The piston end of the rod is attached to the piston by the piston pin, or wrist pin
    连杆的活塞端用活塞销或销轴安装在活塞上。
  • He is tapping the cask of cider.
    他正在打开桶的活塞从里面汲取苹果酒。
  • When the hydrodynamic front reaches the ambient medium it acts like a fast-moving piston
    当流体力学波阵面抵达周围介质时，它像一个运动迅速的活塞。
  • Reduce plunger forward time
    减少活塞推进时间
  • The rapid to-and-fro movements of a piston
    活塞快速的往复运动.
  • My container here has a piston on it.
    我的容器上有一个活塞。
piston是什么意思：
n. 活塞
  • The connecting-rod is attached to the piston by the piston pin.
    连杆与活塞的连接是采用活塞销。
  • The piston is reciprocating inside cylinder.
    活塞在汽缸内部往复运动。
  • My container here has a piston on it.
    我的容器上有一个活塞。
  • a ring for packing pistons or sealing a pipe joint.
    填塞活塞或垫在导管接头的圈环。
  • Connecting rods and pistons are removed as assembly from the engine.
    把连杆和活塞做为整体组件从发动机上拆卸下来。
valve是什么意思：
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。
  • multiple leaf valve
    多簧片阀
  • cooled anode valve
    冷板屏极真空管

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