冲孔: punching; punched hole; pier ...器: implement; utensil; ware中心: centre; centrum; centrality; ...冲头: head; formed punch; piercing ...钟形中心冲孔器: bell centre punch冲孔空心冲头: hollow punch自定心冲孔器: self centering punch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钻孔定中心冲头: centering drill; for drill center冲孔器: piercer; puncheon; puncher; punching pin; setting die空心冲头: hollow punch; hollow-punch实心冲头: solid punch冲孔冲头: piercing punch; slugger punch预冲孔冲头: passing punch中心冲: center chisel; center punch; centre punch冲孔器(冲子): piecer冲孔器洗井: well cleaning with perforator间距冲孔器: spacing punch套管冲孔器: tubing perforator钟形冲孔器: bell punch
