短语词组短语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 association BTA 钻hot spot model trepanning 中空凸模冲孔Deep hole trepanning 深孔套料 返回 trepanning