direction finder造句怎麼寫

a direction finder that gives a bearing by determining the direction of incoming radio signals.

cathode ray direction finder

VHF and UHF direction finder

manual direction finder bearing indicator

I am calibrating radio direction finder or adjusting compasses.

direction finder and radiobeacon

Performance requirements for shipborne radio direction finder

automatic direction finder (ADF) reversal

Function test and calibration self-heterodyne curve for direction finder on sea trial.