【机械工程】滚筒棒，滚轴

barrel chest

water barrel (water cask), water tank

barrel-type grinding machine

barrel gauge (plug gauge)

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

barrel-piston pump (barrel pump, drum pump)

barrel liner【油气】;bush【机】;bushing【机】

barrel distortion correction, keystone correction