单词：ecliptic declination
黄道倾斜, 黄道倾角
单词：ecliptic declination 相关文章
Harvest Moon 秋分前后之满月 Right now, as seen from the northern hemisphere, the ecliptic -- or path of the sun, moon and planets -- makes a narrow angle with the evening horizon. Learn more about the ecliptic -- and the Harvest Moon -- today on Ear
发表于:2019-01-02 / 阅读(307) / 评论(0)
(科普英语)Earth and Sky
(科普英语)Earth and Sky