英语词汇“lunar nutation”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	lunar nutation
释义	lunar nutation lunar nutation [′lü·nər nü′tā·shən] (astronomy) A nodding motion of the earth's axis caused by the inclination of the moon's orbit to the ecliptic; it can displace the celestial pole by 9 seconds of arc from its mean position and has a period of 18.6 years.
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