Britain plans to use whole-body scanners and may test the backscatter system.

英国计划使用全身扫描仪，可能会测试后向散射系统。

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Two light sources are used for simulating the signal and backscatter light respectively.

采用两个模拟光源，分别模拟信号光和后向散射光。

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Two light sources were used for simulating the signal and backscatter light respectively.

采用两个模拟光源，分别模拟了信号光和后向散射光。

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It's not going to be a backscatter event if your ping-pong ball hits the frame or these strings, or the top part.

打到原子核了就是背散射,如果打到框上。

麻省理工公开课 - 化学原理课程节选

So, it'll be considered a backscatter event if your ping-pong ball hits one of the nuclei.

什么情况是背散射,如果你们的乒乓球。

麻省理工公开课 - 化学原理课程节选

Let me explain to you what constitutes a backscatter event.

先不要扔，让我解释一下。

麻省理工公开课 - 化学原理课程节选

The TSA maintained that the backscatter machines, manufactured by Rapiscan Systems, were safe and effective.

CNN: TSA removes body scanners criticized as too revealing

Backscatter machines could return one day if the company develops required software, the TSA has said.

CNN: TSA removes body scanners criticized as too revealing

The last backscatter machines were removed about two weeks ago, a TSA spokesman said.

CNN: TSA removes body scanners criticized as too revealing