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单词 parallactic inequality
释义

Definition of parallactic inequality in English:

parallactic inequality

noun

  • An inequality in the moon's orbit caused by the gravitational attraction of the sun, in which the moon in its first quarter is ahead of its position as calculated assuming uniform motion, and in its last quarter lags behind the calculated position.

Origin

Mid 19th century; earliest use found in Philosophical Transactions of the Royal Society of London.

Definition of parallactic inequality in US English:

parallactic inequality

noun

  • An inequality in the moon's orbit caused by the gravitational attraction of the sun, in which the moon in its first quarter is ahead of its position as calculated assuming uniform motion, and in its last quarter lags behind the calculated position.

Origin

Mid 19th century; earliest use found in Philosophical Transactions of the Royal Society of London.
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更新时间：2025/2/6 11:22:16