单词 | astronomical almanac |
释义 | Astronomical AlmanacAstronomical Almanac(ass-trŏ-nom -ă-kăl) The ephemeris prepared jointly since 1981 by the United States Naval Observatory, Washington DC, and the Royal Greenwich Observatory in the UK. It replaced both the UK Astronomical Ephemeris and the American Ephemeris and Nautical Almanac, published separately in the UK since 1767 and in the USA since 1855.astronomical almanac[‚as·trə′näm·ə·kəl ′ȯl·mə‚nak] |
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