doped semiconductordopingdoping agentdoping atomdoping compensationdoping materialdoping techniquedopplerdoppler current meterdoppler effectdoppler radardoppler radar altimeterdoppler radar guidancedoppler radar inertial navigationdoppler radar navigationdoppler shift doppler frequencydoroiddosdose dosage absorded dosedose equivalentdose ratedose rate meterdosimeterdosimetrydotdot cycledot generatordot matrixdot matrix printer materix printerdot sequential color televisiondotted decimal notationdoubledouble amplitude modulation multiplierdouble balanced mixerdouble break switchdouble button carbon microphone differential microphondouble cancellerdouble channel duplexdouble channel simplexdouble coildouble conductordouble contactdouble diffused metal oxide semiconductordouble diffused mosdouble diffused transistordouble diodedouble errordouble excitationdouble injectiondouble layer