| 单词 | screw wheel | 
| 释义 | > as lemmasscrew wheel   screw wheel  n. the cog wheel in a worm gear; cf. screw gear n. (a). ΘΚΠ society > occupation and work > equipment > machine > parts of machines > wheel > 			[noun]		 > cog or gear > with endless screw screw gear1799 screw wheel1825 1825    ‘J. Nicholson’ Operative Mechanic 428  				The screw-wheel to act in the worm. 1901    Brit. Med. Jrnl. 21 Sept. 774/2  				It consists of one pair of spur wheels and a pair of screw wheels, which transmit movement to the upright spindle through a smaller wheel. 2010    U.S. Patent Applic. 2010/0319475 A1 2/2  				The screw pinion is disposed in a gear housing and engages a screw wheel. < as lemmas  | 
	
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