A set of gears, wheels, rollers, or other connected parts of a mechanism which actuate one another… With of indicating composition.
| 单词 | θ214245 | 
| 释义 | society > occupation and work > equipment > machine > parts of machines > mechanism > 			[noun]		 > consisting of series of parts (2)		 train?1714 A set of gears, wheels, rollers, or other connected parts of a mechanism which actuate one another… With of indicating composition. train-work1859 a series of parts of a mechanism which constitute a train (sense 12a). | 
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