牙轮: gear wheel; gear凿岩: drilling钻头: boring crown; bore bit; dril ...三牙轮凿岩钻头: three-cone rock bit凿岩钻头: rock bit锥形凿岩钻头: cone rock bit打水井机凿岩钻头: rock bit for water well drilling rig凿岩钻头用硬质合金片: rock bit insert棘轮凿岩机: ratchet drill凿岩钻孔机: drill硬砂岩钻头: core-barrel bit钻岩钻头: rock bit履带式凿岩钻车: rock drilling crawler独牙轮钻头: zublin bit六牙轮钻头: six-roller bit三牙轮钻头: three roller bit; three-cone bit; three-roller bit; tricone bit; tricone rock bit; trionebit双牙轮钻头: double-cone bit; twin-cone bit; two-cone bit; two-roller bit四牙轮钻头: crosssection cone bit; four cutter bit; four roller bit; four-roller bit牙轮钻头: cone rock bit; rifler; rock drill bit; rock roller bit; roller cone bit; roller cutter bit; roller rock bit; roller-cone bit; roller-type bit; rollerbit; rolling cutter bit; rolling cutter rock bit; tooth-wheel bit; toothed roller bit; true-rolling bit钻头牙轮: bit cone cono de taladro钻头牙轮齿: bit prong钻头牙轮体: cutter shell波纹锉，牙轮钻头: rifler带蹼牙轮钻头: dm bit钢齿牙轮钻头: steel tooth bit
