空心圆锥滚子轴承可用油冷却滚子，使温升降低，从而提高了允许的转速。
Hollow tapered roller bearings available oil cooling roller, so that temperature rise reduced, thereby increasing the speed allowed.
解决方法是减小工具的曲率半径，或增加一维数控进行补偿，或使用空心圆锥体仿形。
Solutions such as decreasing the tool's curvature radius, using means of single dimensional numerical control compensation or profiling with a hollow cone are effective.
提出了一种在动载体卫星通信控制系统中，无需空心电机的圆锥扫描测角跟踪方案。
This paper issues a kind of Angle measuring tracking method for conical scan without hollow motor in moving carrier satellite communication system.
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