| 单词 | jack-head |
| 释义 | > as lemmasjack-head jack-head n. now historical and rare a lifting-pump used for raising large volumes of water and in which the delivery pipe is secured to the cylinder by a gooseneck; chiefly attributive. ΘΚΠ society > occupation and work > equipment > pump > [noun] > other types of pump bottom lift1778 rose pump1778 centrifugal pump1789 jack-heada1792 jet pump1850 sand-pump1865 Union pump1867 shell-pump1875 eductor1877 brake-pump1881 bull-pump1881 cam-pumpa1884 sand-reel1883 grasshopper1884 knapsack pump1894 knapsack sprayer1897 turbo-pump1903 Sylphon1906 slush pump1913 displacement pump1924 power pack1937 proportioner1945 solids pump1957 peristaltic pump1958 powerhead1981 Cornish pump- a1792 J. Smeaton Reports (1797) I. 223 The jack-head pump. 1816 Encycl. Londinensis XIV. 773/2 A small lifting-pump..called the jack-head or jaquette, is worked by a rod. 1878 R. H. Thurston Hist. Steam-engine 65 This ‘jack-head cistern’ is sufficiently elevated to give the water entering the cylinder the velocity requisite to secure prompt condensation. 1975 D. Anderson Orrell Coalfield ii. 84 Cold water for the injection cistern was pumped up to it by a piston pump known as the jack head pump worked from the main beam. < as lemmas |
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