外がい燃ねん機き関かん

noun

external combustion engine

Technical term for an engine where fuel combustion occurs outside the working fluid, such as a steam engine or Stirling engine.

• 蒸じょう気き機き関かんは外がい燃ねん機き関かんの一いっ種しゅです。

  A steam engine is a type of external combustion engine.