单词	roller bearing
释义	roller bearing noun : a bearing in which the journal rotates in peripheral contact with a number of rollers usually contained in a cage Illustration of roller bearing 1 outer race 2 cage 3 roller 4 inner race Example Sentences Recent Examples on the Web Detail view of the cam and roller bearing assembly. Lee Hutchinson, Ars Technica, 14 Apr. 2022 Dorella was the one who kept the family going, working up to 12 hours a day at the Mac factory, assembling hulking mechanical toolboxes, fitting each roller bearing and drawer just so. Chris Ballard, SI.com, 2 May 2018 Dorella was the one who kept the family going, working up to 12 hours a day at the Mac factory, assembling hulking mechanical toolboxes, fitting each roller bearing and drawer just so. Chris Ballard, SI.com, 2 May 2018 Word History First Known Use 1857, in the meaning defined above
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