recording charactristicrecording densityrecording diskrecording headrecording lamprecording levelrecording noiserecording playback headrecording speedrecording storage tuberecording stylusrecoveryrecovery packagerecovery periodrecovery processrecovery timerectangularrectangular cavityrectangular conductorrectangular coordinaterectangular coordinatesrectangular functionrectangular horn antennarectangular picture tuberectangular pulserectangular pulse trainrectangular waverectangular waveguiderectificationrectification factorrectified currentrectifierrectifier cellrectifier circuitrectifier dioderectifier junctionrectifier meterrectifier stackrectifyrectifyingrectifying actionrectilineal compliancerectilinearrectilinear scanningrecurrencerecursionrecursion methodrecursion relationrecursiverecursive filter
