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单词 hydraulic ram
释义

WordReference Random House Unabridged Dictionary of American English © 2024
hydraulic ram, 
  1. Hydraulicsa device by which the energy of descending water is utilized to raise a part of the water to a height greater than that of the source.
  • 1800–10

Collins Concise English Dictionary © HarperCollins Publishers::
hydraulic ram n
  1. any large device involving the displacement of a piston or plunger driven by fluid pressure
  2. a form of water pump utilizing the kinetic energy of running water to provide static pressure to raise water to a reservoir higher than the source
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