Different tissues emit different radio frequencies which a computer turns into images.

不同组织发出截然不同的无线电频率在计算机上变成图像。

In theory, radio frequency interference from cell phones could affect certain airplane systems.

理论上，来自手机的射频干扰可能会影响某些飞机系统。

We detect the Drone primarily through radio frequency signals that are recognized by our sensors.

我们主要通过传感器识别的射频信号来探测无人机。

Conversely, some people argue that listening for ET at radio frequencies is the wrong approach.

相反，一些人认为利用无线电广播频率收听外星人是一种错误的方式。

Radio frequency bandwidth is limited, yet we are still trying to add more new devices to it.

无线频段是有限的，而我们仍在试图添加更多新设备。

Her method switched radio frequencies in a preprogrammed pattern.

她的方法以预编程模式切换无线电频率。

This dome allowed telescope operators to observe a much wider range of radio frequencies.

这个圆顶使望远镜操作员能够观察更广泛的无线电频率。

Bossa nova uses 2D and 3D cameras and multiple sensors to track items that have radio frequency identification tags and invisible barcodes.

波萨诺瓦使用2D、3D摄像机和多传感器跟踪具有无线射频识别标签和隐形条码的商品。

Let's start off with the simplest, RF wristbands, that receive a radio frequency communicating the precise timing and colors for each band.

让我们从最简单的射频腕带开始，它接收一个无线电频率，传达每个腕带的精确时间和颜色。

This depends on the precise radio frequency of the 21-cm wavelength, or 1420 megacycles per second.

这取决于 21 厘米波长或每秒 1420 兆周的精确无线电频率。