| 单词 | idler pulley |
| 例句 | The boring spindle is driven by an idler pulley, direct from the countershaft. Modern Machine-Shop Practice, Volumes I and II 2012-03-23T02:00:33.140Z An idler pulley was used to tighten the belt. The Story of Great Inventions 2011-10-05T02:00:16.353Z The lever which threw the former friction gear into adjustment was made to operate an idler pulley for tightening the axle-belt. Edison, His Life and Inventions |
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