| 单词 | sunk key | 
| 释义 | > as lemmassunk key   sunk key  n. Engineering a bar, wedge, or other piece of metal fitted into a groove cut longitudinally in a shaft of a machine or engine, and used to couple the shaft with a gear, pulley, or other rotating element; cf. key n.1 12a. ΚΠ 1862    Morning Post 18 July  				The shaft is made of cast-iron, and has an eccentric and balance pulley cast on at one end; a similar one is fixed at the other end by means of a sunk key and nut. 1911    F. D. Furman Questions & Probl. Machine Design vi. 20  				Under what conditions would a sunk key and a saddle key be useful on a single shaft? 2009    Machine Design 		(Nexis)	 24 Sept. 51  				Tapered sunk keys not only act as drivers, but hold components against axial or endwise movement. < as lemmas | 
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