短语词组短語taper boring 圓錐形孔鏜削internal ratio taper boring 內錐形鏜孔internal taper boring 內錐形鏜孔PORTABLE TAPER BORING MACHINE 便攜式錐形鏜牀Taper hole boring axis 鏜軸錐孔nipple taper hole boring machine [機]琯接頭錐孔鏜牀 返回 boring taper