| 单词 | reaction wheel |
| 释义 | > as lemmasreaction wheel reaction wheel n. [probably after French roue à réaction (1834 or earlier); compare also German Reaktionsrad (1856 or earlier as Reactionsrad)] now chiefly historical a waterwheel impelled by the action of escaping water; cf. impulse-wheel n. at impulse n. Compounds 2. ΘΚΠ society > occupation and work > equipment > machine > parts of machines > wheel > [noun] > driven by water waterwheel1408 flood-wheel1515 breast wheel1744 overshot1760 undershot wheel1760 breast-shot1775 bucket-wheel1797 tub-wheel1815 flutter-wheel1817 danaide1825 wheel1842 reaction waterwheel1847 reaction wheel1852 tide-wheel1864 hurdy-gurdy1868 stream-wheel1875 paddle wheela1884 Pelton1885 turbine-pump1900 1840 Z. Parker & R. McKelvey U.S. Patent 1658 1/1 The percussion and reaction wheel..is inclosed in a box or case, which is denominated a ‘draft’..the mouth of said draft dipping into the water.] 1852 J. Bennett tr. J. F. d'Aubuisson de Voisins Treat. Hydraulics 441 Reäction Wheels. We designate by this name, machines in which the water..which issues from them with a certain effort, reäcts upon the parts of the machine opposite the orifices of issue with an equal effort. a1877 E. H. Knight Pract. Dict. Mech. II. 1887/2 Perley and Pattee's saw-mill..has 6 gang-saws, each driven by a Rowe reaction-wheel, 5 feet in diameter. 2003 Nat. New Eng. Fall 65/2 The cast iron ‘reaction wheel’ was introduced in the early 1800s with a number of advantages over the wooden water wheel. < as lemmas |
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