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单词 crawler tractor
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crawler tractor
6. In full crawler tractor. A kind of tractor moving on an endless chain; also elliptical. So crawler track.
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society > travel > means of travel > a conveyance > vehicle > vehicles according to means of motion > vehicles with other means of motion > [noun] > tracked vehicle
caterpillar tractor1908
crawler tractor1922
swamp buggy1941
weasel1944
society > travel > means of travel > a conveyance > vehicle > vehicles according to means of motion > vehicles with other means of motion > [noun] > tracked vehicle > track of
track1884
crawler track1954
1922 Encycl. Brit. XXXII. 739/1 The crawler type..can pass over marshy land where the wheeled tractor would be mired.
1926 Encycl. Brit. Suppl. III. 796/1 The crawler tractor had one or two continuous-chain tracks on which it ran and which it carried with it.
1936 Forestry 10 88 The modern track-laying or ‘Crawler’ tractor with its great flexibility and speed is replacing horse-dragging.
1954 Highway Engin. Terms (B.S.I.) 45 Crawler track, a device, consisting of an endless chain of plates which bear upon the ground, used in place of wheels on vehicles or equipment intended for traversing soft or natural ground.
1955 ‘N. Shute’ Requiem for Wren 6 There were now four big diesel tractors on the place, one of them a crawler.
1959 Times Rev. Industry June 75/1 Largest single shipment of..crawler tractors since production began.
1962 Flight Internat. 82 209/1 The use of a 2,500 ton crawler vehicle to carry each Saturn..from assembly building to launch pad.
1962 Flight Internat. 82 209/1 All other launch equipment..will be transported to the pad by the crawler.
1968 New Scientist 26 Dec. 714/1 The problem of operating mounted ploughs appeared to be insuperable—one reason for the diminishing popularity of the crawler.
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更新时间:2024/11/11 4:11:49