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	DictionarySeeephemeris time ephemeris second ephemeris second See ephemeris time. ephemeris second [ə′fem·ə·rəs ′sek·ənd] (astronomy) The fundamental unit of time of the International System of Units from 1960 until 1968, equal to 1/31556925.9747 of the tropical year defined by the mean motion of the sun in longitude at the epoch 1900 January 0 day 12 hours.
随便看	stuart, jeb stuart, john stuart, john, 4th earl of atholl stuart, john, duke of albany stuart, john leighton stuart, john mcdouall stuart, ludovick, 2d duke of lennox and duke of richmond stuart, mary stuart masque stuart, matthew stuart mill stuart, moses stuart-power factor stuart prower factor stuart-prower factor stuart, robert stuart, robert, 1st duke of albany stuart roosa stuarts stuart style stuart windmill stuas stub stub1 stub angle

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