发射机回答器 有源转发器脉冲转发器发射机应答器光转发器转频器发射应答器转调器应答机询答器
Transmitter responder, active transponder, pulse transponder, transmitter transponder, optical transponder, frequency converter, transmitter transponder, modulator, transponder, questioner
以上为机器翻译结果，长、整句建议使用 人工翻译 。