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 — compare ball bearing [roller bearing: 1 outer race, 2 cage, 3 roller, 4 inner race]
随便看	neural lamina neurally neural net neural network neural plate neural process neural ridge neural shield neural spine neural tube neuraminic neuraminic acid neuraminidase neurapophysis neurasthenia neurasthenic neurasthenically neuration neuraxial neuraxis neuraxon neuraxone neurectoblast neurectoderm neurectomy

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