在天文学轴和形状轴之间的角度差称做“章动”，引起地球轨道螺旋摆动，就是著名的卡南德尔“摆动”。

The angular difference between the astronomical axis and the axis of figure called a "nutation" causes an earth orbit al spirical oscillation known as the famous chandler "wobble".

youdao

由此对CIP轴进行了理论定义，并给出了其极移、岁差和章动的动力学方程。

Therefore, the theoretical definition of CIP and its dynamical equation on polar motion and precession-nutation have been given.

youdao

由此对CIP轴进行了理论定义，并给出了其极移、岁差章动的动力学方程。

Therefore, the theoretical definition of CIP and its dynamical equation on wobble and precession-nutation are given.

youdao