| 单词 | sun gear |
| 释义 | > as lemmassun gear sun gear n. Mechanics the central gear of an epicyclic or planetary gearing, around which a planet gear revolves; = sun wheel n. 2b; cf. sun-and-planet adj. ΘΚΠ society > occupation and work > equipment > machine > parts of machines > wheel > [noun] > cog or gear > with axis rotating around another > sun sun wheel1800 sun gear1864 1864 Amer. Artisan 13 July 80/2 Each revolution of the planet gear gives two to the fly-wheel shaft on which the sun gear is secured. 1935 R. Trautschold Standard Gear Bk. xi. 173 The relative speed of the driven internal gear in terms of the speed of the driving sun gears. 2010 W. L. Cleghorn Mech. Machines (Internat. ed.) vi. 216 It [sc. a planetary gear train] consists of a sun gear, having N1 teeth, a concentric ring gear, having N4 teeth, and planet gears. < as lemmas |
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