The transponder sends signals about altitude, locations and direction of a plane.

应答器发送高度、置和飞机航向的信号。

" This is your transponder, " Peggy said, handing him the small device.

“这是你的应答器，”佩姬说着，递给小型设备。

Most birds in this wood carry transponders fitted to them after their capture in mist nets.

这片树林里的大多数鸟曾被雾网捕获，携带有应答器。

21 a.m., the transponder, which identifies the aircraft on radar, stops transmitting.

21。检测雷达上飞机信号的应答器停止传输信号。

Surveyor : where are EPIRBs and SART?

无线电应急示标和搜救雷达应答器在哪？

Word came out yesterday from Malaysia's government that somehow the plane's transponder was turned off.

马来西亚政府昨日发布的消息称飞机的应答器处于关闭状态。

He also had a tiny transponder inserted under his skin so that he could be identified next time he was caught.

还在皮肤下植入了微型应答器，这样下次被就可以辨认出的身份。

He also expects ships to meet in those areas and swap transponders attract.

还预计船只会在那些区域会合并交换应答器以吸引注意。

Its transponders and went dark 10 days later.

它的应答器在10天后停止工作。

The ship must have disabled its transponder.

那艘船肯定关掉了应答器。

SART is short for Search And Rescue Radar Transponder .

SART 是搜救雷达应答器的缩写。

Then descend to 10, 000FT below, set transponder code to 7700.

然后下降下面的 10， 000FT， 将应答器代码设置为 7700。

Less than an hour after takeoff from Kuala Lumpur, Malaysia, the plane's transponder was either turned off or it just stopped working.

在从马来西亚吉隆坡起飞不小后, 飞机的应答器要么被关闭或只是停止工作。

These shadow tankers hide their tracks by tampering with their transponders, but satellite images make it possible to trace their true voyage.

这些影子油轮通过篡改应答器来掩盖行踪，但卫星图像使得追踪它们的实际航程成为可能。

Most commercial drones are constructed of plastic and are difficult to spot electronically because they're small, fly low to the ground and don't carry a transponder to signal their positions.

而大多数商用无人机的材质都是塑料，加上电子设备很难识别——无人机体型很小，贴近地面飞行，加之没有携带会暴露它们置的应答器。