往おう復ふく機き関かん

noun

reciprocating engine

Technical term in mechanical engineering; refers to an engine that converts pressure into rotating motion using pistons.

• 往おう復ふく機き関かんは、ピストンの往おう復ふく運うん動どうを回かい転てん運うん動どうに変かえる。

  A reciprocating engine converts the reciprocating motion of pistons into rotational motion.