breech block

英 美
  • n.枪闩(尾栓;闭锁机;游底;螺体)
  • block n.街区;木块;石块;大楼;一组;阻塞(物);障碍(物)v.阻塞
  • breech n.后膛;臀部v.给(枪、炮)装上后膛;给...穿上裤子
名词 breechblock:
  1. a metal block in breech-loading firearms that is withdrawn to insert a cartridge and replaced to close the breech before firing