短语词组短语boring g bar 钻杆;镗杆Right boring tool bar 右镗刀杆boring bar box 镗杆箱cylinder boring bar 汽缸镗杆boring bar tool 镗杆刀具slit nosed boring bar 槽端镗杆boring bar head 搪杆头jumper boring bar 冲击钻孔器deformable boring bar 变形镗杆 返回 boring bar