Officials at the Transportation Administration say they have already tried out a handful of backscatter scanners.

运输安全局的官员说,他们已经尝试了少量的后向散射扫描仪.

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The contrastive experiment of back - scattering echo and beacon angle -- arrival fluctuation was introduced.

介绍了后向散射回波与 信标光 到达角起伏的原理性比对实验.

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Dispersion signal test must insure the signal curve is normal; they should be printed and filed.

光纤后向散射信号曲线测试,必须保证信号曲线无异常; 全程信号曲线应打印存档.

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Because the backscattering coefficient is constant, Amazon tropic rain forest is the important calibration region.

亚马逊热带雨林的后向散射系数呈现大面积的均匀性和稳定性, 故成为分布目标定标最主要的定标场.

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