单词 | driving-wheel |
释义 | driving-wheel a. A wheel which communicates motion to one or more other wheels or machinery. b. Each of the large wheels of a locomotive engine, to which the power is transmitted through the connecting-rod and crank. c. The wheel of a bicycle or tricycle to which the force is directly applied. Also fig.
1838N. Wood Railroads, An engine..with driving wheels ten feet diameter. 1870Emerson Soc. & Solit. vi. 116 The men in cities who are the centres of energy, the driving-wheels of trade, politics, or practical arts. |

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