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单词 sidereal time
释义

sidereal time

noun

1
: time based on the sidereal day
2
: the hour angle of the vernal equinox at a place

Example Sentences

Recent Examples on the Web The sky chart is a disk that rotates at a speed of sidereal time (23 hours, 56 minutes and 4 seconds). Roberta Naas, Forbes, 7 Apr. 2021

Word History

First Known Use

1765, in the meaning defined at sense 1

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更新时间:2026/6/2 5:45:15