The bearings have two loose flange rings on the outer ring, a flangeless inner ring and four rows of rollers (fig 1) or eight rows of rollers (fig 2).是什么意思_The bearings have two loose flange rings on the outer ring, a flangeless inner ring and four rows of rollers (fig 1) or eight rows of rollers (fig 2).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句