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bn:07619682n
Noun Concept
EL
No term available
ZH
== 公转产生的结果 == === 恒星的周年视差位移 === ==== 周期 ==== 地球公转以大约一年为周期，恒星视差位移也以一年为周期，这种视差位移称为周年视差位移。 Wikipedia
Relations
Sources
IS A
EN
motions of the Earth
EN
orbital revolution

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