| 单词 | power hoist |
| 释义 | > as lemmaspower hoist power hoist n. ΘΚΠ society > occupation and work > equipment > lifting or hoisting equipment > [noun] > others polancre1356 spindle1398 wrest1584 handscrew?1660 sea-crab1689 lewis1743 crab1753 wheel and axle (also axis)1773 tippler1831 fall1834 outrigger hoist1835 lewisson1842 power hoist1869 tipper1870 lifting screw1885 powerlifter1909 bucket chain1911 bracket-crab- 1869 Sci. Amer. 3 July 8/1 It is a valuable improvement, since it furnishes a more safe and convenient arrangement in the laborious process of hoisting.., and for power hoists, provides at once for the slipping off, stretching or breaking of belt. 1972 ‘G. Black’ Bitter Tea (1973) ix. 139 A contractor's lorry..with a power hoist. 2003 Ocala (Florida) Star-Banner (Nexis) 11 July Williams was operating a power hoist when he accidentally set a 6,000-pound steel mold down on a 440-volt welder power cord on the floor. < as lemmas |
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