| 关于时间尺度 |
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| 引用本文： | 漆贯荣.关于时间尺度[J].时间频率学报,1998,21(1):28-32. |
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| 作者姓名： | 漆贯荣 |
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| 作者单位： | 中国科学院陕西天文台!陕西省临潼，710600 |
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| 摘 要： | 国际天文学联合会（IAU）自70年代末引进地球力学时TDT和质心力学时TDB后，又在第21届大会上决定以地球时TT取代TDT，并引进地心坐标时TCG和质心坐标时TCB两个新的类时变量，现对引进这些变量的原因、其间相互关系以及目前存在的问题作一介绍。
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| 关 键 词： | 时间 时间尺度 |
On the Time Scales |
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| QI Guan-rong.On the Time Scales[J].Journal of Time and Frequency,1998,21(1):28-32. |
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| Authors: | QI Guan-rong |
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| Abstract: | The IAU 21st General Assembly held in 1991 resolved that the Terrestrial Time(TT)replaces the Terrestrial Dynamical Time(TDT) and the new terminologies of GeocentricCoordinate Time (TCG) and Barycentric Coordinate Time (TCB) were introduced at thesame general assembly. The reasons for introducing these time-like arguments, the relationships between these differnt time scales and the questions appearing in practical applications are described in this paper. |
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| Keywords: | Time Time Scales |
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