| 单词 | worm-screw |
| 释义 | > as lemmasworm-screw worm-screw n. ΚΠ 1677 J. Flamsteed Let. 25 May in Corr. (1995) I. 557 To this a toothed arch was fastened by the helpe of which and a worme screwe, the peece of woode..might be raised or depressed easily. 1835 A. Ure Philos. Manuf. 228 The toothed wheel, acted on by the worm-screw. 1892 Photogr. Ann. II. 391 The mechanical power is a central worm screw working in four racks on pillars. < as lemmas |
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