rollera轧辊
rollern.滚筒;滚轴;滚转机;巨浪
roller shutters卷帘
roller leveling辊子矫平
roller jar mill活轴球磨
roller carriage托滚架,滚子支座
roller vibrator滚轴式振动器
roller fairlead滚轮导缆器
roller attitude滚转姿态
Roller syndrome眶尖综合征
roller bearings滚动轴承
roller printing辊筒印花