The seat rows only backscatter frequencies above a certain threshold, though, so they act, in effect, as a sound filter. 每排座椅只反射高于一定频率的声音,因此实际上它们充当的是声音过滤器。
We plan to extend our backscatter algorithms and measurement infrastructure to track Internet attacks in real-time and actively probe victimized hosts to understand the impact of these attacks, the distribution of various vuln 我们计划把我们的背向散射算法和测量结构扩展到实时追踪互联网攻击,以及主动探测受到攻击的主机来了解这些攻击的影响,各种弱点的分布,和部署的安全措施的效果.
backscatter
[ verb ] scatter (radiation) by the atoms of the medium through which it passes <verb.change>
The Defense Department tried to sell a southern-facing sector of "over the horizon backscatter" radar to Congress in fiscal years 1989 and 1990 _ citing a potential bomber threat from Latin America.
If "backscatter" works as planned, it would be able to spot even the smallest smuggler aircraft somewhere over Mexico, long before it reached the border.
Other "backscatter" sites are under construction in the West, and Congress also has agreed to construction of the radar in Alaska.