rollera轧辊
rollern.滚筒;滚轴;滚转机;巨浪
roller hoop drum加强桶
roller bend test辊承弯曲试验,滚压弯曲试验
roller door stop滚珠门碰头
roller-coastern.过山车; 云霄飞车; 惊险游戏车
roller mechanism双圆盘机构
rollers and cage滚柱和隔圈
roller dermatome滚追植皮刀
Roller-squeeze挤压
roller stretcher辊式拉伸矫直机
roller screeding滚轮抹平