drawboring

['drɔ:bɔ:]
drawboring
vt.
drawbore的变形
drawbore
['drɔ:bɔ:]
n.
【木工】钻销孔
vt.
【木工】(在雄榫等)上钻钻销孔
镗大(炮口径等)，扩(炮)膛径
变形：
vt.
drawbored
. drawboring