regulatingregulating circuitregulating speedregulating unitregulating windingregulationregulatorreignitionreignition voltage restriking voltagereinartz crystal oscillatorreinartz oscillatorreinforcementreinsertion of crrierrejection bandrelrelationrelativerelative addressrelative bearingrelative codingrelative delayrelative errorrelative frequencyrelative humidityrelative life timerelative lonospheric opacity meterrelative permeabilityrelative permittivityrelative plateau sloperelative refractive indexrelative responserelative specific ionizationrelative spreadrelative stabilityrelative time delayrelative velocityrelativityrelaxrelaxationrelaxation circuitrelaxation inverterrelaxation oscillationrelaxation oscillator relaxation generatorrelaxation timerelayrelay armaturerelay channelrelay circuitrelay coilrelay contact
