| 单词 | planet pinion |
| 释义 | > as lemmasplanet pinion planet pinion n. Mechanics a planet wheel, esp. one significantly smaller than the sun wheel. 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 1908 Daily Chron. 14 Nov. 8/6 Greater attention is being paid to the elimination of internal friction from these devices, as in the provision of ball bearings for the planet pinions in the Sturmey Archer gears, and roller bearings for the planet cage in the Armstrong. 1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) X. 273/2 The number of teeth on the planet pinion of a simple planetary gear does not enter into the equations for speed ratio because the pinion engages both sun and ring gears. 1988 N.Y. Times (Nexis) 17 Nov. c29/1 There was a problem understanding how the planet pinions of a differential enable the inner and outer wheels of a turning car to travel at two different speeds. < as lemmas |
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