double layer supertwisted nematicdouble level metaldouble linedouble local ascillatordouble modingdouble modulationdouble plse recordingdouble poledouble pole double throwdouble pole piece magnetic headdouble pole single throwdouble precisiondouble side band modulationdouble side band suppressed carrierdouble side band with small carrierdouble side band without carrierdouble side spectrumdouble sideband reduced carrier transmissiondouble sideband transmissiondouble slug tunerdouble spaseddouble squirrel cagedouble star connectiondouble stub tunerdouble subscript notationdouble throw switchdouble trach tape recordingdouble tuned amplifierdouble tuned cricuitdouble tuned detectordouble way rectifierdouble wee antennadouble wounddouble zepp autennadoublersdoubletdoublet triggerdowndown converterdown counterdownlinkdownlink shared channeldownloaddownrangedownward modulationdpdtdpmdpskdraftdrain
