載入中... 相關課程 Back 2-2觀念06原子序1到18元素的電子排列 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. 2-2觀念06原子序1到18元素的電子排列 上傳學習單 下載學習單