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ウィリアム・カンカンバの風車について
3,929,504 views |
William Kamkwamba |
TEDGlobal 2007
• June 2007
Read transcript
マラウィの発明家ウィリアム・カンカンバは、わずか14歳のとき、図書館の本にあった簡単な図面をもとに、有り合わせの部品から彼の家族のために発電用の風車を作った。
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