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DR, Dr or dr may refer to: * Doctor (title), a person who has obtained a doctoral degree ==Technology and science== * Dead reckoning, the process of estimating a global position * Designated Router, a concept used in routing protocol OSPF * Design rationale, an explicit documentation of the reasons behind decisions made when designing a system or artifact * Digital radiography, a form of x-ray imaging, where digital X-ray sensors are used instead of traditional photographic film * Disaster recovery, a plan that covers the data, hardware and software critical for a business to restart operations in the event of a disaster * Dynamic range, the ratio between the largest and smallest possible values of a changeable quantity, such as in sound and light 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「DR」の詳細全文を読む スポンサード リンク
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