empty hole

基本解释不装药的炮眼

网络释义

1)empty hole,不装药的炮眼2)unloaded hole,未装药的炮眼3)blast-hole charge,炮眼装药4)premature burning,炮眼内炸药的过早起爆5)base charge,基本装药量;炮眼底部装约6)drillhole burden,炮眼的负裁