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单词
parallactic ellipse
释义
WordReference Random House Unabridged Dictionary of American English © 2024
parallac
′
tic ellipse
′
,
[
Astron.
]
Astronomy
the apparent ellipse, as seen against the background of more distant stars, described annually by a nearby star because of the earth's orbital motion around the sun. Cf.
parallax
(def. 2).
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更新时间:2025/12/19 13:27:46