... precession of a top陀螺的旋进 precession of earth地球的旋进 precession of gyroscope陀螺旋进 ...
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precession of the earth 地球进动 ; 地球岁差
The rotation of the Earth includes precession, nutation, variations of the rotation rate and polar motion.
地球自转运动包括岁差和章动，极移和日长的变化。
The moment of precession and nutation is a prerequisite to explain these phenomena and one main way of building nutational serial of rigid Earth.
岁差章动力矩是解释这些现象的前提条件，也是建立刚体地球章动序列的最主要方法之一。
It is the result of a process called precession, where the Earth behaves like a spinning top, which takes 26,000 years and has at the moment moved the zodiac by about a month.
这是由于岁差引起的。地球就像一个旋转的陀螺，经过2.6万年，现今黄道的位置比以前提前了一个月。
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