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energy conservation : 1）省エネルギー
energy of activation : 1）活性化エネルギー
energy transduction : 1）エネルギー変換
energy density : 1）エネルギー密度
energy of dissociation : 1）解離エネルギー
energy saving : 1）省エネルギー
enervation : 1）元気をなくすこと、無気力、衰弱
energy budget : 1）エネルギー収支
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energy conservation

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