中文翻译与英英解释 | 周日运动；(因地球自转而产生的星球每日似乎由东向西的)视移动。
| | | diurnal: adj. 1.每日的；【天文学】周日的。 2.昼间的，白 ... | | motion: n. 1.运动,动,移动(opp. rest)。 2.( ... | |
| Diurnal motion is an astronomical term referring to the apparent daily motion of stars around the Earth, or more precisely around the two celestial poles. It is caused by the Earth's rotation on its axis, so every star apparently moves on a circle, that is called the diurnal circle. |
例句与用法 | 1. | Apparent diurnal motion
周日视动
| | 2. | Mean diurnal motion
平均周日运动
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