transponder

træn'spɒndә

n. electrical device designed to receive a specific signal and automatically transmit a specific reply

n. 发射机应答器
[电] 询答机

45,367

BNC 频率

23,678

使用频率

transponder 可以分解为 trans-（表示“跨越、传输”）和 -ponder（与“应答”相关，源自“respond”）。结合起来可以理解为“跨越并应答的设备”。

例句

1. The airplane's transponder helps air traffic controllers locate it on their radar.

飞机的应答器帮助空中交通管制员在雷达上定位它。

2. Each satellite has a transponder that relays signals back to Earth.

每颗卫星都有一个应答器，将信号传回地球。

3. The car's transponder allows the driver to unlock the doors with a remote.

汽车的应答器让司机可以用遥控器解锁车门。