| 单词 | ratchet pinion | 
| 释义 | > as lemmasratchet pinion   ratchet pinion  n. ΚΠ 1779    Philos. Trans. 1778 		(Royal Soc.)	 68 979  				We must..except the rochet pinions. 1849    Sci. Amer. 29 Sept. 9/3  				On this circular frame is a small ratchet pinion, G, fixed on a short axis. 1920    T. W. Chalmers Paper Making & its Machinery xi. 103  				Any arrangement for vibrating the strainer drum which employs a ratchet pinion and hammer..is apt to prove unpleasantly noisy when in use. 1982    Kirk-Othmer Encycl. Chem. Technol. XIX. 31  				Several design configurations can be combined into one component [using powder metallurgy], such as a combination ratchet pinion or a gear with a cam surface that might otherwise be an assembly of components. < as lemmas  | 
	
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