regressive sedimentregularregular bitregulated dischargeregulated flowregulated releaseregulated setregulated set cementregulated streamflowregulating damregulatorregurrehabilitationreichenbachitereid mechanism or reid or reidreiditereineritereinforced concretereinforced grillagereinforcenmentrejected energyrejection suragerejection wave or rejection surge or rejection surgerejuvenatedrejuvenated stream or revived stream or revived streamrejuvenationrelational algebrarelational database management system or rdbms or rdbmsrelative abundancerelative age or age or agerelative coordinate systemrelative densityrelative frequencyrelative fugacity or fugacity or fugacityrelative humidityrelative index of refractionrelative locationrelative permeability or permeability or permeabilityrelative timerelative time scale or relative time or relative timerelative water hammer headrelaxationrelaxation at high temperaturerelaxation methodrelaxation of stressrelaxation testrelaxation time or rheidity or rheidityrelease fracturereleased mineralreleasing bend
