axesaxialaxial leaded componentaxial ratioaxiomaxiomaticaxisaxleayrton shunt universal shuntayton perry windingazimuthazimuth blankingazimuth gatingazimuth markerazimuth rate computerazimuth resolutionazimuth stabilizedazinuthal equidistant projection map great circle mapbb displayb h curve magnetization curveb h meterb scopeb side carrierb station slave stationb supplyb y signalbabackback amoere turnsback contactback currentback echoback electromotive forceback endback heatingback inductionback lobeback porch effectback potentialback pressureback resistanceback shunt keyingback speceback to backbackbonebackeward wave scillatorbackgatingbackgroundbackground color