... mental rotation心理旋转 angle of rotation转动角;自转角;旋光角 job rotation工作轮换 ...
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随着潮汐摩擦力和地球体积的增大，地球自转角速度变慢。
Because of tidal friction and aggrandizement of the earth's volume, the earth's rotation angular velocity slows down.
地球的自转角度能够保持不变，完全是因为有了月球的引力拉动。
The Angle of earth's spin is constant only because the moon's gravitational pull.
结合并联机床的加工要求，研究了工作空间及其随自转角的变化规律。
By combining with the machining needs of parallel machine tools, the working space and the law along with the variation of its autorotation Angle were studied.
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