frequency type telemeterfrequency valuefresnel diffractionfresnel lensfresnel regionfresnel zonefresnel zone platefresnel zone reflectorfrictionfriction bondingfriction coefficientfriction contactfriction factorfriction forcefriction lossfrictionalfrictional electricityfrictional forcefrictional resistancefringe areafringe effectfringe howlfringing fieldfritfroced oscillation forced vibrationfront contactfront endfront end fabricationfront loadingfront porchfront to backfsfskftft sftpfuchs antennafuel cellfullfull adderfull automaticfull break infull bridge converterfull conditionfull currentfull duplex communicationfull duplex operationfull electronicfull loadfull load current
