This machine is either a backscatter X-ray or millimeter wave scanner.

这类机器是描仪或是毫米段波描仪。

If the machine just looks like a flat wall, it's probably a backscatter X-ray scanner.

如果这个机器看起来像一堵墙，它可能就是描仪。

She has yet to analyse the data fully, but preliminary investigation indicates that both snow depth and temperature influence backscatter.

她还没有充分分析数据，但初步调查表明，雪的深度温度会影响后。

They're the cylindrical machines that look like futuristic phone booths, and they use the same basic principles as backscatter scanners.

它们呈圆柱形状，看起来像电话亭，它们的工作原理描一样。

So when you shoot lasers through the fibers, those impurities backscatter some of the light right back to the laser source.

因此当你通过光纤发送激光时，这些杂质会将一部分光回激光源。

Buried fibre-optic networks can detect underground vibrations by the " backscatter" they cause in the photons travelling through the cables.

埋地光纤网络可以通过地下振动在穿过电缆的光子中引起的“”来检测地下振动。

As they towed it, they sent radar pulses on the frequency bands used by the satellites downwards into the snow and measured the amount of backscatter.

当他们拖着雪橇的时候，他们在卫星使用的频段雪中发雷达脉冲，并测量的数量。

The deflection of the signals in this backscatter gives a picture of how particular snow conditions might be changing the way the satellite's radar is returned.

中信号的偏差说明了特定的雪况可能会如何改变卫星雷达返回的方式。

The amount of X-ray radiation you're exposed to in a backscatter scan is extremely low, a tiny fraction of the amount you're about to be exposed to by flying on a plane.

器描辐非常小，比在飞机上接受的辐少得多。