載入中... 相關課程 Back Apsidal Precession (Perihelion Precession) and Milankovitch Cycles 登入觀看 ⇐ Use this menu to view and help create subtitles for this video in many different languages. You'll probably want to hide YouTube's captions if using these subtitles. Apsidal Precession (Perihelion Precession) and Milankovitch Cycles : Apsidal Precession (Perihelion Precession) 上傳學習單 下載學習單