hydraulic ram

名词 n.

英文释义

名词 n.
  1. Used other than figuratively or idiomatically: see hydraulic, ram.
  2. A water pump in which a flow of water is intermittently halted by a valve so that the flow is forced upward through an open pipe, usually into a reservoir.
  3. A hydraulic cylinder with a piston activated by pumping hydraulic fluid into the cylinder.
    — The lifts are operated by means of a hydraulic ram with wire ropes, which derives its pressure from a small pump driven by an electric motor.

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