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UT1

n. the local time at the 0 meridian passing through Greenwich, England; it is the same everywhere

1、世界时

世界时分为三类：直接通过天文观测求得的世界时称为世界时-0（UT0）；计及地极移动影响改正后的世界时称为世界时-1（UT1），它真正反映地球自转的统一时间。

Difference UT1当世界协调时与一号世界时之差;一类世界时之差;世界时之差

UT1 diurnal variationUT1周日变化

n.the local time at the 0 meridian passing through Greenwich, England; it is the same everywhere

同义词：Greenwich Mean TimeGreenwich TimeGMTuniversal timeUT

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