活性汚泥: Revision history

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14 January 2021

  • curprev 11:0311:03, 14 January 2021Jin.kato talk contribs 439 bytes +439 ページの作成:「{{辞書情報 | 用語 = 活性汚泥 | 読み = かっせいおでい | 英語表記 = activated sludge }} '''活性汚泥'''(かっせいおでい)は、汚水を…」