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R-value or rvalue may refer to: * In computer science, a value considered independently of its storage location * R-value (insulation) in building engineering, the efficiency of insulation of a house * R-value (soils) in geotechnical engineering , the stability of soils and aggregates for pavement construction * R-factor (crystallography), a measure of the agreement between the crystallographic model and the diffraction data * In statistics, the Pearson product-moment correlation coefficient, or simply ''correlation coefficient'' * In ophthalmic optics, the distance between the segment optical center and the segment top * In solid mechanics, the Lankford coefficient == See also == * R rating (disambiguation) * L-value (disambiguation) 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「R-value」の詳細全文を読む スポンサード リンク
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