The massive changes of the kinematic pattern occurred roughly between the Eocene and Oligocene epochs, which is in accordance with the great reorganization in global kinematics and dynamics.
运动学模式发生巨大转变的时期，大致在始新世与渐新世之间，这与全球运动学和动力学发生的重大改组的时间相一致。
Proceed from the definition of the rotating axis of the lathe, the author described a pattern of axis' kinematic accuracy and the methods measuring the rotating accuracy.
从主轴回转轴线定义出发，阐述了轴线误差运动形式和回转精度的测量方法。
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