| 单词 | pump work |
| 释义 | > as lemmaspump work pump work n. ΚΠ c1689 in J. Y. Akerman Moneys Secret Services Charles II & James II (1851) 112 For pump work and water carriage in Hyde Park. 1777 Philos. Trans. (Royal Soc.) 67 493 This is always the case where the larger kind of pump-work is to be kept in motion. 1854 Househ. Words 26 Aug. 43/2 The cabinet fire-engine, with its chest-like exterior,..its pump-work cunningly concealed. 1911 Times 3 May 27/2 A steel head gear is erected over the wells for convenience in lifting the pump work in the shafts. 2001 Limnol. & Oceanogr. 46 882 The energy cost for various ciliary filter feeders shows that useful pump work constitutes 0.3–1.1% of the total metabolic expenditure. < as lemmas |
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