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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。
youdao
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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。
youdao