Results for « 地球 动力 时 » (cmn)
15156746-n
地球动力时, 地球 力学 时, 地球力学时, 地球 动力 时
TT, terrestrial time, terrestrial dynamical time, TDT, ephemeris time
     [in 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
 

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