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单词 mean planet
释义

mean planet


noun Astronomy.

a hypothetical planet that coincides with a real planet when the real planet is at perihelion and that moves in an orbit at a constant velocity equal to the mean velocity of the real planet.

Words nearby mean planet

mean life, mean line, meanly, meanness, mean noon, mean planet, mean proportional, means, mean sea level, Means grass, means of production
Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020
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更新时间:2024/12/23 1:24:04