英语词汇“ephemeris second”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	ephemeris second
释义	ephemeris second noun Astronomy. the unit of ephemeris time, defined as a precise fraction of the length of the tropical year 1900. Origin of ephemeris second First recorded in 1965–70 Words nearby ephemeris second ephemera, ephemeral, ephemerality, ephemerid, ephemeris, ephemeris second, ephemeris time, ephemeron, ephemeropteran, ephemerous, Ephesian Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020
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ephemeris second