Tra từ terrestrial dynamical time - Từ điển WordNet v3.1

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Từ điển WordNet v3.1 - WordNet Dictionary

terrestrial dynamical time

noun

(astronomy) a measure of time defined by Earth's orbital motion;
terrestrial time is mean solar time corrected for the irregularities of the Earth's motions
• Syn:
terrestrial time, TT, TDT, ephemeris time
• Topics:
astronomy, uranology
• Hypernyms:
time unit, unit of time