| 单词 | centre pivot |
| 释义 | > as lemmascentre pivot centre pivot adj. and n. (a) adj.(attributive) designating a method of crop irrigation in which a long wheel-mounted pipe with downward-facing sprinklers along its length slowly rotates around a central well, watering a circular area typically half a mile in diameter; making use of this method; (b) n. an irrigation unit or system which makes use of this method. ΚΠ 1968 Beatrice (Nebraska) Daily Sun 7 June 5/5 Center pivot self-propelled systems consist of a sprinkler line suspended well above the ground on some type of wheel unit. 1991 Economist 2 Nov. 22/3 Nebraska is the birthplace of centre-pivot irrigation—quarter-mile-long sprinklers that turn in slow circles. 2006 V. Smil Transforming 20th Cent. iv. 146 By the early 1990s the country had about 110,000 center pivots irrigating nearly 6 Mha. 2015 Marlborough Express (Blenheim, N.Z.) (Nexis) 27 Jan. (News section) 6 Moving to highly efficient modern irrigation systems like centre pivots is a responsible move by the irrigation industry. < as lemmas |
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