12:04duration 12 minutes 4 seconds
Energy and use of solar energy (English subtitles…
Energy and use of solar energy (English subtitles available)
Energy is defined as the ability to do work. It is vitally important to develop more efficient and environmentally friendly techniques for energy sources to keep modern society moving…
09:44duration 9 minutes 44 seconds
能源和太陽能的應用 (中文字幕可供選擇)
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14:55duration 14 minutes 55 seconds
節約能源
•節約能源的方法 •電器的能源效益
14:45duration 14 minutes 45 seconds
低碳生活
使同學認識什麼是低碳生活及願意遵行低碳生活以保護地球