특정 무선 신호를 수신하면 자동으로 응답 신호를 보내는 전자 장치로, 주로 항공기 식별 및 추적에 사용됨.
An electronic device that receives a specific radio signal and automatically transmits a response, often used in aviation for identification and tracking.
예문:
"The pilot switched the transponder to the emergency code to alert air traffic control."
"Satellite transponders are essential for relaying television signals across the globe."
"The toll booth uses a transponder in the car to automatically deduct the fee from the driver's account."