| 单词 | derailleur gear |
| 释义 | > as lemmasderailleur gear A bicycle gear in which the ratio is changed by switching the line of the chain (while pedalling) so that it jumps to a different sprocket on the rear wheel. Also derailleur gear. ΘΚΠ society > travel > means of travel > a conveyance > vehicle > vehicle propelled by feet > [noun] > cycle > parts and equipment of cycles > gears crypto-dynamic1883 crypto1886 tricoaster1908 derailleur gear1930 1930 Cycling 11 Apr. 337/1 The Derailleur system of multi-speed gearing is..well-tested..on the Continent, but comparatively new to this country... The gear works by ‘de-railing’ the chain from one back sprocket to another of different size, thus giving a different gear. 1950 Chambers's Encycl. II. 307/2 The most popular variable gear in Great Britain is the 3- and 4-speed hub gear... On the Continent and in America the dérailleur-type gear is more favoured. 1959 Elizabethan Apr. 35/1 My lightweight bike with 4-speed hub gear, which is not so vulnerable as the derailleur. 1975 Which? May 140/3 All our drop handlebar bikes..had derailleur gears. 1984 N.Y. Times 23 Sept. v. 2/1 The whir of well-oiled machinery is interrupted only by decisive clinks as derailleurs move chains to a lower gear for the long, steady climb over the terminal moraine. < as lemmas |
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