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	agroecosystem agroecotype agroforester agroforestry agrogeological agrogeologically agrogeologist agrogeology agrogorod agro-industrial agro-industry agrologic agrological agrologically agrologist agrology agrometeorology agromyza agromyzid agromyzidae agronome agronomic agronomical agronomist agronomy

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