Single-direction and double-direction angular contact thrust ball bearings (Figures 1.50 and 1.51) are used for machine tool spindles requiring rigid axial guidance.
单向和双向推力角接触球轴承（图1.50和1.51）都用机床主轴轴向刚性作为指导。
Air propeller is the tool which transforms the power of aerial engine to the thrust of aircraft.
空气螺旋桨是把航空发动机的动力转化为飞行器推进力的工具。
Thrust control of 6-dof virtual axle machine tool is studied in this paper.
讨论滑块式6自由度虚拟轴机床直线电机的推力补偿问题。
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