| 单词 | shallow well |
| 释义 | > as lemmasshallow well shallow well n. a well that is not deep; spec. (see quot. 1972 for shallow end n.). ΘΠ the world > the earth > water > lake > pool > [noun] > well water piteOE wellOE pitOE pulkc1300 draw-wellc1410 draught-wellc1440 winchc1440 brine-well1594 salt spring1601 sump1680 pump well1699 spout-well1710 sump hole1754 pit-well1756 sink1804 bucket-well1813 artesian well1829 shallow well1877 dip-well1894 garland-well1897 village pump1925 1877 J. T. Fanning Pract. Treat. Water Supply Engin. i. vii. 104 Shallow well and spring supplies are, usually, yields of water from the drift formation alone. 1943 Bull. Amer. Assoc. Petroleum Geologists 27 838 Of the shallow wells drilled for gas, 80 per cent were producers and 20 per cent were dry. 1959 E. A. Ackerman & G. O. G. Löf Technol. in Amer. Water Devel. x. 281 The first irrigation was from shallow wells within the suction lift of centrifugal and piston pumps. 1972 Gloss. Geol. (Amer. Geol. Inst.) 650/2 Shallow well. (a) A water well..that taps the shallowest aquifer in the vicinity. The water is generally unconfined ground water. (b) A well whose water level is shallow enough to permit use of a shallow-well (suction) pump, the practical lift of which is taken as 22 ft. < as lemmas |
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