terrestrial dynamical time

Xem thêm: terrestrial time, TT, TDT, ephemeris time



terrestrial dynamical time

Từ điển WordNet

    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; terrestrial time, TT, TDT, ephemeris time