定向钻扩孔  reaming operation in directional drilling

根管扩孔钻  root-canal reamer

骨扩孔钻  osseous reamer; bone reamer

火钻扩孔  Piercing reaming

近钻头扩孔器  near-bit reamer

扩大钻孔  reamed well

扩底钻孔灌注桩  bell-out bored pile

扩底钻孔桩  under-reamed bored pile

扩孔木钻  expanding auger

扩孔器与钻头直径之差  shell clearance

扩孔钻  rdamer; reamer; fraise; expanding drill; counter-bore; expanding auger; Counterbore

扩孔钻和锥管丝锥复合刀具  combined taper pipe tap and core drill

扩孔钻井工具  expanding drilling tool

扩孔钻头  broaching bit; reamer bit; English tubbing; reamer; counterbore cutter head; expanding bit; hole dilating drill

平底扩孔钻  Counterbore; counterbore drill

三槽扩孔钻  three-groove core drill

三级扩孔钻  three-step core drill

深基础钻孔扩底灌注桩  under-reamed bored pile

神经根管扩孔钻  nerve canal reamer