短语词组短語trepanning drill 套料鑽;套孔錐bore trepanning 套孔trepanning process 套料工序EDM trepanning 電火花套型Trepanning carving 套料雕刻boring and trepanning association BTA 鑽hot spot model trepanning 中空凸模沖孔Deep hole trepanning 深孔套料 返回 trepanning