line of positionline of propagationline of sightline of sight command guidanceline of sight pathline of sight propagationline of sight sistanceline padline parameterline printer high speed printerline regulationline repeaterline resistanceline spectrumline stabilized oscillatorline stretcherline to earth faultline to line faultline to line voltageline tracerline transformerline transmissionline trapline triggeringline turnaroundline type modulatorline under loadline voltageline voltage regulatorlinearlinear absorption coefficientlinear accelerationlinear accelerator linac linear electron acceleratorlinear actuatorlinear amplificationlinear amplifierlinear approximationlinear backward wave oscillatorlinear beam tubelinear constant coefficient systemlinear controllinear convolutionlinear cryptanalysislinear dampinglinear detectionlinear detectorlinear devicelinear differential transformerlinear electric motorlinear expansion
