reciprocating engine

• n. [机]往复式发动机

英英释义

Noun:

1. an internal-combustion engine in which the crankshaft is turned by pistons moving up and down in cylinders

例句

用作名词 (n.)

1. The prime mover may be a gas reciprocating engine.
   原动机可能是燃气往复式发动机。