| 单词 | gyratory |
| 释义 | gyratory, a.|ˈdʒaɪərətərɪ|
[as if ad. L. *gȳrātōrius, f. gȳrāre to gyrate. Cf. F. giratoire.]
a. Moving in a circle or spiral; revolving, whirling.
1816J. Smith Panorama Sci. & Art II. 52 The mischief produced by the gyratory motion of the air. 1833Herschel Astron. iv. 172 The nutation of the earth's axis is a small and slow gyratory movement. 1858Merc. Marine Mag. V. 197 Several others were more or less implicated in the gyratory mass. 1874Hartwig Aerial W. viii. 124 Large gyratory columns of water or sand. 1898Blackw. Mag. Oct. 539/2 Solomon studied awhile the gyratory movements of three hawks.
b. Applied to a system of directing road traffic round a roundabout or through a system of one-way streets to avoid the need for one line of traffic to intersect another.
1909Westm. Gaz. 7 Aug. 4/2 The gyratory principle, by which vehicles are directed into circular lines ingeniously devised to avoid intersection. 1926Rep. Comm. Police Metropolis, 1925 16 in Parl. Papers (Cmd. 2660) XV. 239 Gyratory systems for the circulation of traffic, after years of discussion, reached the point of practical demonstration this year. 1928Observer 5 Feb. 13/7 Now that every week dedicates a new bunch of streets to the Gyratory System. 1966Guardian 8 Sept. 5/4 A new gyratory road system to ease traffic congestion..is to be built..at Stretford.
▸ n. Brit. A road junction or traffic system requiring the circulatory movement of traffic, and which is larger or more complex than an ordinary roundabout; (also more generally) = roundabout n. 4d.
1983Times 3 May 30/5 Roadworks on Bridgefoot gyratory, Stratford on Avon. 1987Oxf. Times 11 Sept. 11/5 A traffic gyratory (roundabout) which incorporated three streets: Speedwell Street, St. Aldate's and the other part of Thames Street. 2001Mod. Railways Feb. 46/1 Vehicle entry will be allowed onto the deck from both ends of the rebuilt bridge, but departing traffic will be allowed only to turn right, so that it must flow down onto the Harrow Road gyratory. |
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