他们使用卫星来发射信号。

They use satellites to transmit signals.

你需要一个强大的天线来发射信号。

You need a strong antenna to transmit signals.

这个设备能够发射信号到你的手机。

This device can transmit signals to your phone.

无线电塔可以发射信号到很远的地方。

Radio towers can transmit signals over long distances.

科学家们正在研究如何更有效地发射信号。

Scientists are studying how to more effectively transmit signals.

但是我们也在发射信号。

But we are transmitting too.

天线发射信号是通过一定长度的导体上的电流震荡产生电磁波，比如无线电波。

Antennas transmit signals by using an oscillating electrical current in a length of conductive material to generate electromagnetic radiation, such as radio waves.

功率分析仪可控制只读取在信道内的发射功率，假定该手机要发射信号。

The RF power analyzer is programmed to read the power only in the channel in which the mobile device is supposed to be transmitting.

该成像算法利用二元混沌信号作为雷达发射信号，通过产生一个特征波形来指示目标的时延。

This imaging algorithm uses chaotic binary signals as transmitted radar signals and produces a characteristic waveform to indicate time delay.

不过现在，它已经来到了那个人造物发射信号的地点。

But now, as the Observer homed in on the location of the artifact's transmitted signal.