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- perihelion precession 近日点进动
- A comet is at perihelion when it is closest (=very close) to the sun. 彗星最接近太阳时，它就是在近日点。
- To move in or be subjected to precession. 产生进动向前运动或被驱向前
- To move inor be subjected to precession. 产生进动向前运动或被驱向前。
- This gyroscopic motion is called precession. 此陀螺运动叫做进动。
- This movement is called precession. 这一移动称为岁差。
- A comet is at perihelion when it is closest to the sun. 彗星最接近太阳时，它就是在近日点。
- How much does the direction of perihelion change each orbit? 近日点方向使每个轨道改变了多少？
- And calculated the anomalous precession of the orbit of Mercury. 计算出水星轨道进动的。
- He then accounts for the precession of the equinoxes. 然后他解释分点岁差。
- The angular deviation,as observed from the sun,of a planet from its perihelion. 近点距离，近点角从太阳观察到的行星距近日点的角度偏差
- It goes backward, and is therefore called a precession. 它有前向后推，因此称做一个岁差。
- In the third chapter, precession cone semi-angle is discussed. 第三章主要讨论进动锥角的问题。
- When perigee and perihelion coincide tidal range is at its greatest. 当月球与地球到达它们的近地点和近日点的时间恰好重合时，就会引起最大的潮汐。
- The angular deviation,as observed from the sun.of a planet from its perihelion. 近点距离，近点角从太阳观察到的行星距近日点的角度偏差
- Because of this,perihelion will shift one day later about every 50 years. 由于这个原因，（地球过）近日点每隔50年大约改变1天。
- Spacecraft tracking could look for a similar precession of Mars's orbit. 利用追踪太空船，也可以找寻火星轨道类似的进动。
- The precession direction is determined by the initial phase of precession AC. 进动方向由进动电流的初始相位决定。
- The anomalistic year is the time between successive transits of the Earth through the perihelion. 近点年是地球连续两次通过近日点之间的时间。
- Then, a simple discussion on solitary precession cone semi-angle follows. 并对进动锥角是否有独立性做了一点讨论。
