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FFD, Ffd or ffd may refer to: * first fit decrease, Descending order for the first time to adapt to. * Fairfield railway station, Melbourne, Australia; station code FFD. * Fall for Dance Festival at New York City Center * Focus film distance, the distance between the X-ray source and the film in diagnostic radiography * Flange focal distance, the distance from the mounting flange of a lens mount system to the film plane * Front focal distance, the distance from the front focal point of the system to the vertex of the first optical surface * Forward flank downdraft (sometimes front flank), in meteorology, the leading edge (downwind) downdraft of a supercell thunderstorm * The IATA airport code for RAF Fairford * FF Developments, a UK transmission engineering company * Free-form deformation, a technique for manipulating any shape in a free-form manner. * Flame Failure Device, an alternative name for a flame supervision device 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「FFD」の詳細全文を読む スポンサード リンク
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