mean solar day
柯林斯词典
1. N the time between two successive passages of the mean sun across the meridian at noon. It is equal to 24 hours 3 minutes and 56.555 seconds of mean sidereal time 平均太阳日
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1. N the time between two successive passages of the mean sun across the meridian at noon. It is equal to 24 hours 3 minutes and 56.555 seconds of mean sidereal time 平均太阳日