“Julian ephemeris century”的概念、定义、翻译、参考文献-科学参考

单词	Julian ephemeris century
释义	Julian ephemeris century [`jül·yǝn ǝ`fem·ǝ·rǝs `sen·chǝ·rē] ^ASTRONOMY The unit of ephemeris time (ET) in Simon Newcomb's formulas which relate the orbital position of the earth to ephemeris time; the Julian ephemeris century is subdivided into 36,525 days, and 1 ephemeris day = 86,400 ephemeris seconds.
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