钻孔: drill; bore; drill hole perf ...定中心: centring; centre冲头: head; formed punch; piercing ...中心冲头: center punch; centre punch; centreing punch; prick punch定位中心冲头: locating center punch滚花中心冲头: knurled grip center punch校距中心冲头: spacing center punch钟型中心冲头: bell center punch钟形中心冲头: bell center punch冲孔器中心冲头: prick punch钻孔定位: location of drill hole钻孔定向器: hole director钻孔定心: drill centring空心冲头: hollow punch; hollow-punch实心冲头: solid punch中心冲: center chisel; center punch; centre punch冲孔空心冲头: hollow punch手动空心冲头: hand hollow punch定中心: [地测] centring; centre楔尖式钻孔定向器: whi tock; whipstock定位中心冲: locating center punch; locating centre punch中心冲击: centric(al) impact中心冲突: central conflict钟形中心冲: bell center punch自动中心冲: automatic center punch
