Energy Return on Investment(エネルギー収支比)の略なのね(´・ω・`) http://ja.wikipedia.org/wiki/%E3%82%A8%E3%83%8D%E3%83%AB%E3%82%AE%E3%83%BC%E5%8F%8E%E6%94%AF%E6%AF%94 …
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Energy Return on Investment(エネルギー収支比)の略なのね(´・ω・`) http://ja.wikipedia.org/wiki/%E3%82%A8%E3%83%8D%E3%83%AB%E3%82%AE%E3%83%BC%E5%8F%8E%E6%94%AF%E6%AF%94 …