| 单词 | θ214368 | 
| 释义 | society > occupation and work > equipment > machine > parts of machines > wheel > 			[noun]		 > cog or gear > friction (3)		 friction-gear1874 traction-gearing1877 an inexact name for friction-gearing n. at friction, n. compounds 2. Subcategories:— 			transmission of power by			(1)		  | 
	
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