| 单词 | bottom lift |
| 释义 | > as lemmasbottom lift bottom lift n. Mining (now historical) the lowest pump or set of pumps in a mine; cf. lift n.2 12. 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- 1778 W. Pryce Mineralogia Cornubiensis 317/1 Bottom-Lift, the deepest or bottom tier of pumps. 1906 Trans. Inst. Mining Engineers 29 266 The pumps are..arranged in three lifts... The top lift is 660 feet; the second lift, 720 feet; the bottom lift, 720 feet. 1966 Trans. Newcomen Soc. 38 76 The bottom lift of pumps was 7 in. diameter. < as lemmas |
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