“direction finder”造句，怎麼用direction finder造句

manual direction finder bearing indicator

I am calibrating radio direction finder or adjusting compasses.

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

direction finder and radiobeacon

automatic direction finder (ADF) reversal

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

VHF and UHF direction finder

cathode ray direction finder

Performance requirements for shipborne radio direction finder