“Coordinated Universal Time”的概念、定义、翻译、参考文献-科学参考

Coordinated Universal Time

Astronomy

The time-scale that is provided by broadcast time signals, and is the basis for all civil timekeeping. The natural choice for this standard time would be Universal Time (UT), but that contains unpredictable irregularities caused by changes in the rotation rate of the Earth. Consequently UTC is linked to International Atomic Time (TAI), but an offset is introduced to keep it always within 0.9 s of UT. This is done by introducing an occasional leap second. The time-scale now widely known as GMT is in fact UTC.

Space Exploration

An alternative name for Universal Time Coordinated, Greenwich Mean Time (GMT) as maintained to scientific standards by atomic clocks.

Internet

单词	Coordinated Universal Time
释义	Coordinated Universal Time Astronomy The time-scale that is provided by broadcast time signals, and is the basis for all civil timekeeping. The natural choice for this standard time would be Universal Time (UT), but that contains unpredictable irregularities caused by changes in the rotation rate of the Earth. Consequently UTC is linked to International Atomic Time (TAI), but an offset is introduced to keep it always within 0.9 s of UT. This is done by introducing an occasional leap second. The time-scale now widely known as GMT is in fact UTC. Space Exploration An alternative name for Universal Time Coordinated, Greenwich Mean Time (GMT) as maintained to scientific standards by atomic clocks. Internet An international standard which defines the time throughout the world.
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