| 单词 | to rough down |
| 释义 | > as lemmasto rough down to rough down 1. transitive. To work (iron) into rods. Now rare. ΘΚΠ society > occupation and work > industry > working with specific materials > working with metal > work with metal [verb (transitive)] > machine turn?c1335 mill1677 to rough down1829 broach1846 spin1853 plane1875 straddle mill1898 profile1905 jig-bore1939 spark-erode1960 1829 London Encycl. XII. 194 A set of rollers, moved by a thirty horse power engine, will rough down in a week 200 tons of such iron. 1874 J. A. Phillips Elem. Metall. 299 Two pairs of rolls..constitute a puddling train, one pair being used for roughing down the bloom, and the other for finishing it into a bar. 1922 F. H. Colvin & F. A. Stanley Machine Tools & their Operation II. vii. 267 The rollers were first roughed down with the automatic feed to within 0.0015 to 0.0025 inch of finished size. 2. transitive. To give (wood) a rough, preliminary planing. Cf. roughing n. 1b. ΚΠ 1831 Jrnl. Franklin Inst. 8 New Ser. 161 On the face of the cast iron wheel are fixed four plane irons. Two of them single for roughing down the work, [etc.]. 1887 C. M. Woodward Man. Training School ii. 56 If the piece has a cross grain or knots, the cut must be very thin... As soon as the piece is well roughed down, stop the lathe. 1960 McGraw-Hill Encycl. Sci. & Technol. XIV. 543/1 Flat or uniformly contoured surfaces of wood are roughed down, smoothed, or made level by the shaving and cutting action of a wide-edged blade or blades. 1986 Pract. Householder July 44/2 You can rough down just a small section..at a time, by ‘nibbling’ away at the waste wood. 2005 H. Bowen Woodturning Jewellery iv. 25 With the lathe running, rough down the scrap wood to a cylinder, then true up the end face. < as lemmas |
| 随便看 |
|
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。