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QPM may refer to: *Queen's Police Medal, a medal awarded to police officers in the United Kingdom and Commonwealth for gallantry or distinguished service *Quasi-phase-matching, a technique in nonlinear optics which allows a positive net flow of energy from the pump frequency to the signal and idler frequencies by creating a periodic structure in the nonlinear medium *Quantitative phase contrast microscopy, a collective name for a group of microscopy methods which quantifies the phase shift that occurs when light waves passes through a more optically dense object. *Quality Protein Maize, contains nearly twice as much usable protein as other maize (or corn) grown in the tropics and yields 10% more grain than traditional varieties of maize *Questions of Procedure for Ministers, the confidential predecessor of the Ministerial_Code_(United_Kingdom) 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「QPM」の詳細全文を読む スポンサード リンク
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