滚动阻尼器

rock and roll

roll

roller mill, mill, roll refiner

cornice brake【机】;press brake【机】;roll bending machine【机】

forging roll

combined roll-on/roll-off,lift-on/lift-off containership【船】

web-roll core with arrangement for securing the ends of filamentary material

laminator roll for the manufacture of fibre-reinforced plastics