| 单词 | knapsack pump |
| 释义 | > as lemmasknapsack pump knapsack pump n. = knapsack sprayer n. 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- 1894 Country Gentlemen's Catal. 302/2 Vermorel's knapsack pumps. 1944 Living off Land: Man. Bushcraft vii. 153 Firefighting weapons are many and varied... The knapsack pump—a 4-gallon container with shoulder straps, brass hand pump and nozzle—is most effective. < as lemmas |
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