| 单词 | water ram |
| 释义 | > as lemmaswater ram water ram n. (a) a hydraulic ram (see ram n.1 5a); (b) (as a mass noun) knocking or banging in a water pipe when the flow within it is suddenly stopped; = water hammer n. 2. ΘΚΠ society > occupation and work > equipment > lifting or hoisting equipment > [noun] > hydraulic ram1801 water ram1806 hydraulic ram1808 water balance1843 1806 tr. J. Mongolfier in Jrnl. Nat. Philos. June 103 The following is the description of a water ram [Fr. belier hydraulique.]. 1890 Jrnl. Franklin Inst. 129 328 (heading) ‘Water Ram’ in Pipes. 1922 Jrnl. Amer. Water Wks. Assoc. 9 597 It is advisable for the fire department to provide relief valves for each hose line so that when shut-off nozzles are used the possibility of producing damage by water ram may be obviated. 2003 How it works: Sci. & Technol. (ed. 3) XIX. 2658 (caption) The water ram works on the principle of a water hammer. < as lemmas |
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