搜尋標籤: "renewable and non-renewable energy sources"

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…

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   jackieyclee edb-jackieyclee 0 個讚 56 次播放

能源和太陽能的應用 (中文字幕可供選擇)

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   jackieyclee edb-jackieyclee 0 個讚 218 次播放