Rollan罗兰rolln.卷；滚动；名单；压路机；颤音；圆形物，面包卷v.摇摆；滚；绕；转动；展开rolling shaft fastening卷轴固定roll-in and roll-out转入转出roll-over draw machine翻转式起模机rolling electric machine轧线电机rolled translucent glass滚压玻璃rolling force prediction轧制力预报Rolling Stock Speciality机车车辆专业roll-over type molding翻台式造型Rolle mean value theorem罗尔中值定理rolling element bearings滚动轴承