| 单词 | TDT |
| 释义 | TDT (once / 2954828 pages) n WORD FAMILY TDT n (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|Hyper TT, ephemeris time, terrestrial dynamical time, terrestrial time time unit, unit of time a unit for measuring time periods |
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