載入中... 相關課程 Back 2-1觀念07原子內粒子數的表示方法 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. 2-1觀念07原子內粒子數的表示方法 上傳學習單 下載學習單