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はやぶさの記事、興味深く読ませていただきました。先日、映画「はやぶさ遥かなる帰還」を鑑賞しました。イオンエンジンの技術者の方々の葛藤や努力が描かれていて、胸が熱くなりました。特許ひとつひとつに、きっと色々なドラマがあるのでしょうね！