应用计算流体力学(CFD)方法对转动坐标系下的三维环形密封流场进行了准稳态数值模拟，在此基础上进行了转子动力系数的计算。
Three dimensional annular seal flow field was simulated quasi-steadily with computational fluid dynamics (CFD) method in a rotating reference frame. The Rotordynamic coefficients were calculated.
如何坐标系偏手性与转动方向和顶点订购吗？
How does coordinate system handedness relate to rotation direction and vertices ordering?
介绍了转动关节的基本结构和工作原理，给出了以转动关节为基础的三坐标数控铣床的曲面抛磨装置。
The polishing and grinding for curved face device is given based on these turning joints, of numerical control milling machine with three linear coordinates.
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