analemma中文什么意思

n.
(地球仪上表示)太阳的日倾斜度的刻度〔通常穿过赤道，呈延长了的8字形〕。

百科释义

In astronomy, an analemma (; from Greek ?ν?λημμα "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.