| 单词 | sidereal day |
| 释义 | sidereal day (once / 393978 pages) n WORD FAMILY sidereal day: sidereal days USAGE EXAMPLESA sidereal day is approximately 23 hours, 56 minutes and 4.1 seconds. BBC(Nov 11, 2014) Then a sidereal day is three minutes fifty-six seconds shorter, than a solar day of twenty-four hours. Jones, Thomas P., Conversations on Natural Philosophy...(2011) The time of such a revolution is called a sidereal day, and is divided into hours, minutes and seconds. Various, Encyclopaedia Britannica, 11th Edit...(2010) n the time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day Syn|Hyper day time unit, unit of time a unit for measuring time periods sidereal timemeasured by the diurnal motion of stars |
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