单词 | water-inch |
释义 | > as lemmaswater-inch water-inch n. [ < water n. + inch n.1, after French pouce d'eau (1642 or earlier)] now historical and rare a measure of water discharged through an orifice, consisting of the quantity of water flowing through a one inch (in diameter) circular opening in a vertical plate, at a given (usually small) pressure. ΘΚΠ the world > matter > liquid > liquid flow > action or process of flowing > [noun] > unit of water flow measurement water-inch1847 inch1858 miner's inch1865 second-foot1898 1847 J. R. & L. D. B. Gordon tr. J. Weisbach Princ. Mech. Machinery & Engin. I. vi. viii. 506 The ‘pouce d'eau’, or water-inch.—To measure small discharges, we avail ourselves of the flow through round 1 inch wide orifices, in a thin plate, under a given pressure. 1910 Encycl. Brit. XIV. 53/1 The discharge from a circular orifice one French inch in diameter, with a head of one line above the top edge, was termed by the older hydraulic writers a water-inch. < as lemmas |
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