reflector elementreflector spacereflector voltagereflex bunchingreflex circuitreflex klystronreflow solderingreformatrefractedrefracted indexrefracted waverefractionrefraction errorrefraction lossrefractive indexrefractive modulusrefractivityrefractometerrefractoryrefractory metalrefractory metalsrefrangiblerefrectivityrefreshrefresh cyclerefrigerateregenerateregenerationregeneration controlregeneration period scan periodregenerativeregenerative amplifierregenerative detectorregenerative receiverregenerative repeaterreggia spencer phase shifterregilateregimeregionregional channelregisterregister controlregister fileregister lengthregister markregistration registerregistryregolating effectregularregulated power supply
