| 单词 | pitch wheel |
| 释义 | > as lemmaspitch wheel ΘΚΠ society > occupation and work > equipment > machine > parts of machines > wheel > [noun] > cog or gear cog-wheel1416 main wheel1678 spur-wheel1731 rack wheel1772 spur gear1808 gear1829 gearing1833 spur gearing1844 pitch wheel1854 tooth-wheel1862 gear-wheel1874 maintaining wheel1874 cog1883 1854 Sci. Amer. 28 Oct. 56/4 The projection bar, G, is fixed to a pendant bar of the framework;..d d, e e, f f, and g g, are pitch wheels, whose several uses are obvious. 1867 Sci. Amer. 21 Sept. 178/3 The motion is imparted to the driving wheels by a pitch chain passing over a pinion in connection with the gearing, and a large pitch wheel turning on the same shaft with the driving wheels. < as lemmas |
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