| 单词 | pin drill |
| 释义 | > as lemmaspin drill pin drill n. Engineering a drill having a central projecting bit surrounded by a cutting face, used for countersinking. ΘΚΠ society > occupation and work > equipment > piercing or boring tools > [noun] > drill > other drills jumper1769 screw drill1821 stop-drill1843 hand drill1845 Swiss drill1846 traverse-drill1853 crown borer1854 pin drill1858 foot drill1860 perforator1861 pin-bit1873 Archimedean drill1889 paddy1895 stope drill1908 stem1914 screw gun1945 1858 Z. Colburn & A. L. Holley Permanent Way App. 166 The ferrules are turned up at each end and the stays are faced up true around the rivet-holes, by a pin drill. 1884 F. J. Britten Watch & Clockmakers' Handbk. (new ed.) 94 For making square sinks to receive screw heads and the like, a pin drill is used. 1955 Van Wert (Ohio) Times-Bull. 21 July 12/2 A hand-powered pin drill may be used for making the many holes for the wires. 2001 Constr. Equipm. (Nexis) 1 June 42 A hydraulic dowel pin drill can be mounted on backhoes, curb-and-gutter machines, graders and skid-steer loaders. < as lemmas |
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