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analemma

《analemma》怎以读

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《analemma》是什么意思

（在地球仪上表示全年太阳的赤纬和时差的）地球仪8字曲线；

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复数：analemmas

英英释义

Analemma

In astronomy, an analemma (; from Greek ἀνάλημμα "pedestal of a sundial") is a curve representing the changing angular offset of a celestial body (usually the Sun) from its mean position on the celestial sphere as viewed from another celestial body (usually the Earth). The term is used when the observed body appears, as seen from the viewing body, to move in a way that is repeated at regular intervals, such as once a year or once a day.

以上来源于:Wikipedia

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