| 单词 | planet wheel |
| 释义 | > as lemmasplanet wheel planet wheel n. Mechanics an outer wheel which revolves around the central wheel in an epicyclic or planetary gear. ΘΚΠ society > occupation and work > equipment > machine > parts of machines > wheel > [noun] > cog or gear > with axis rotating around another > planet planet wheel1799 planet pinion1908 planet1912 planet gear1916 planetary1941 1796 W. Farish Plan Course Lect. Arts & Manuf. Chem. 28 Circular motion produced..by sun and planet wheel.] 1799 R. R. Livingston in Trans. Soc. Promotion Agric. iv. 90 It is still more defective when applied to obtain a circular motion; this it effects either by a winch, or planet wheels. 1827 J. Farey Treat. Steam Engine i. vi. 449 The link causes the centre of the planet-wheel to travel in a circular orbit..when it revolves round the sun-wheel. 1912 R. W. A. Brewer Motor Car Constr. xii. 153 The large bevel wheel is bolted to a casing, which holds firmly a star piece having four arms on each of which runs a planet wheel... These four planet wheels engage with two sun wheels. 1976 D. J. Leeming & R. Hartley Heavy Vehicle Technol. vi. 117/2 If the planet carrier is braked and the sun wheel driven, the annulus is driven in a reverse direction—the planet wheels being idler wheels only—and reverse ratio is obtained. < as lemmas |
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