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- The earth rotates from west to east. 地球从西向东旋转。
- Does the earth rotate on an axis? 地球是绕轴旋转的吗?
- The earth rotates on its axis once every24 hours. 地球每24小时依其轴心自转一次。
- The earth rotates on its axis once every 24 hours. 地球每24小时依其轴心自转一次。
- The earth rotates as it travels through space. 当地球通过太空时,它在转动。
- The earth rotates once a day on its axis. 地球绕它的自转轴一天旋转一周。
- This method has been used to determine earth rotation parameters series BRP (SHA) 87L01 and EOP (SHA) 88L01. 复弧法是一个可以在卫星动力测地研究中推广的方法。 上海天文台利用二级复弧法估算了地球自转参数序列ERP(SHA)87 L 01和EOP(SHA)88 L 01。
- Wheels, tops and the earth rotate. 轮子、陀螺和地球均旋转。
- The earth rotates around the sun. 地球绕着太阳转。
- The earth rotates once every 24 hours. 地球每24小时转一周。
- The earth rotates and it revolves. 地球一面自转,一面公转。
- The earth rotates once a day on its axis . 地球绕它的自转轴一天旋转一周。
- The earth rotates round the sun. 地球绕太阳转。
- Because the couplings between crust and the earth mantle are different in different region, the same variation of earth rotation must induce different crust activities. 同样是地球自转速度变慢,因不同区域地壳与地幔的耦合关系不一样,速度变化对不同区域地壳活动的影响也不同。
- Taking fclio earth rotation and oblateness into consideration, the orbit perturbation, attitude errors and its stability effects on SAR Doppler parameters are analyzed. 在考虑地球自转和扁率的情况下,分析了轨道摄动、卫星姿态指向误差和稳定度对SAR多普勒参数的影响,并进行了数字仿真。
- Deciding whether and when a leap second is needed falls to an international organisation called the International Earth Rotation and Reference Systems Service (IERS). 决定是否需要闰秒、何时添加闰秒的任务由国际地球自转事务中央局(IERS)承担。
- The earth rotates around the sun, and the earth rotates once a day. 地球围绕太阳转,与此同时地球每天自转一次。
- This site provides numerous resources on the planet Earth. It contains a table of statistics, photography taken from space, radar-generated images of the planet, animations of the earth rotation, etc. 资源描述:网站提供了有关地球这个行星的大量资源,包括统计资源,从宇宙拍摄的照片,雷达图片,地球转动的动画等。
- In response to the demanding of The IAU Working Group "Earth Rotation in the HIPPARCOS Reference Frame" ,the observational data of Shanghai Photoelectric Astrolabe since 1974 have been reorganized, and also transferred in machine readable form. 根据IAU重新归算地球自转参数的要求,对上海天文台光电等高仪自1974年以来的观测资料作了重新整理,并录成机器可读的形式。
- The main causes of circulations are the Coriolis force brought by the Earth rotation itself, the interaction of runoff and tidal current, and the density gradient caused by saltwater intrusion. 科氏力、径潮流相互作用及盐水入侵导致的密度梯度是形成环流的主要原因。