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Formation may refer to: * Formation flying, aerobatics performed with several aircraft * Formation (military), a high-level military organization * Tactical formation, the physical deployment of military forces ==Mathematics and science== * Class formation, an axiomatization of class field theory in mathematics * Formation (group theory), a class of groups * Formation (stratigraphy), a formally named rock stratum or geological unit * Rock formation, a mass of bedrock displaying a curious or interesting shape - see List of rock formations * Cave formation, a speleothem * (Oxide) formation, anodization of a metal during manufacturing of electrolytic capacitors * In the study of ecosystems, a community formed by groups of plants which have adapted themselves to similar climatic conditions 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「formation」の詳細全文を読む スポンサード リンク
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