名词
中文翻译：太阳的平均黄经
同义词：
['mean solar longitude', 'mean solar declination']
例句：
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1. The observerswere right to note that the sun's position was slightly off from its average ascension.
观察员注意到太阳的位置与平均黄经稍有偏差，这是正确的。
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2. Due to the Earth's elliptical orbit, the sun's mean ascension varies throughout the year.
由于地球的椭圆轨道，太阳的平均黄经在一年中会发生变化。
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3. Astronomers use precise measurements of the sun's mean ascension to calculate its position in space.
天文学家通过精确测量太阳的平均黄经来计算其在太空中的位置。