| 单词 | screw jack |
| 释义 | > as lemmasscrew jack screw jack n. a jack operated by means of a screw (sense 1a). ΘΚΠ society > occupation and work > equipment > lifting or hoisting equipment > [noun] > jacks screw1404 scalet1640 German devil1670 Jack1679 screw jack1719 spring-jack1724 jackscrew?1735 crick1775 fence-jack1874 swing-jack1875 wagon-jack1875 windlass-jack1875 truck-jack1877 setter1895 1719 D. Defoe Life Robinson Crusoe 62 In the Carpenter's Stores I found..a great Skrew-Jack. 1854 C. W. Richmond Let. 17 July in Richmond-Atkinson Papers (1960) I. 150 Broadmore says a screw jack is no use with logs. If a rack and pinion jack can be procured that is the right thing. 1945 Sci. News Let. 10 Nov. 304/1 Small screw jack operated by electric motor is used on heavy aircraft to raise and lower the horizontal stabilizers. 2001 Old-house Jrnl. July 37/1 You operate a screw jack by turning the head with a bar..similar to a capstan winch. < as lemmas |
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