vent-piece

短语

词形变化

vent-pieces 复数 vent-pieces

释义与例句

n.
  1. 1.

    In a breechloading firearm, a vertical sliding block with a conical plug on its front surface to seal the firing chamber and close the breech.

    工程 政治 军事

词源

From vent + piece.

来源：wiktionary