| 单词 | maintaining wheel |
| 释义 | > as lemmasmaintaining 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 1874 U.S. Patent 152,097 1 (title) Improvement in mantaining-wheels for watch-barrels. a1884 E. H. Knight Pract. Dict. Mech. Suppl. 576/1 Maintaining Wheel, a wheel actuated by a spring, to keep a watch going while being wound. < as lemmas |
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