【生活】四轮滑冰鞋【生活】滚筒式冰鞋

每个人都可以在这个公园内溜冰。

roller mangle having moving flat table

roller bearing ball

bale, casc (barrel), wood, roller, stone, vacuum-gripper, two-arm gripper

roller shutter, roller-type grille

feed roller film inking unit

stencil roller

printing roller turning and roll-finishing machine

roller-type venier calliper