| 释义 |
钻头zuàntóu钻、钻床、钻探机上用的刀具,金属切削上常用的是有螺旋槽的麻花钻头,地质勘探用的有硬质合金钻头、金刚石钻头等。{bit (of a drill); cutter fitted on a drill or drilling machine. The bits used for metal cutting usu. have twisted grooves, and those used for geological prospecting are hard alloy bits or diamond bits.} |