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Overpressure is a pressure difference, relative to a normal pressure, in various circumstances: * In engineering, the pressure difference over the wall thickness of a pressure vessel * In geology, geologic overpressure, the pressure regime that is the primary cause of "oil gushers" ==Military science== *Overpressure or blast overpressure, the pressure caused by a shock wave over and above normal atmospheric pressure *Overpressure ammunition, small arms ammunition loaded with a powder charge to produce a greater internal pressure than is standard *Overpressure (CBRN protection), a method to create a safe toxin free area against airborne contaminants 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「Overpressure (disambiguation)」の詳細全文を読む スポンサード リンク
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