开(出铁)口机［器］
iron notch opening machine，iron-notch tapper，tapping machine［drill］，taphole opener［drill］，taphole drilling machine◇电钻开(出铁)口机［器］electric rotary drill，风动开(出铁)口机［器］*，全液压开(出铁)口机［器］*，液压开(出铁)口机［器］*，撞击式风动开(出铁)口机［器］*，自动开(出铁)口机［器］automatic taphole drill |