trepanning drill套料钻;套孔锥
bore trepanning套孔
trepanning process套料工序
EDM trepanning电火花套型
Trepanning carving套料雕刻
boring and trepanning associationBTA钻
hot spot model trepanning中空凸模冲孔
Deep hole trepanning深孔套料
N（名词） an instrument resembling a carpenter's brace and bit formerly used to remove circular sections of bone (esp from the skull) 环锯 [surgery] → compare trephine
V（动词） to cut (a hole or groove) with a trepan 用环锯造(孔或槽)