【运输】滚轮(轴，筒)、叶轮（圆盘）

garage-type mobile jack mounted on rollers

fulling textile fabrics by rollers

locking mechanism being actuated through coating cams and balls or rollers

dressing of milling discs, rollers

rollers

using perforated rollers, discs

feed rollers on pivoted arms in selective printers

yarn drying by means of rollers