| 单词 | jig-boring |
| 释义 | > as lemmasjig-boring jig-boring n. ΘΚΠ society > occupation and work > industry > working with specific materials > working with metal > [noun] > machining milling1613 spinning1857 profiling1888 drilling1894 jig-boring1932 spark machining1954 spark erosion1955 1932 A. P. Gwiazdowski & C. B. Lord Econ. Tool Engin. xiii. 183 (heading) Jig-boring methods. 1935 H. J. Davies Precision Workshop Methods vii. 115 A large proportion of the time occupied in jig-boring..is taken up in the initial setting up of the discs or buttons on the work. 1970 W. J. Patton Mod. Manuf. vii. 157 Jig-boring machines are not production machines but toolmaking equipment for the accurate location and drilling of holes. < as lemmas |
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