单词:radar patrol aircraft
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This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? [Radio sound:] Northeast 480 you are cleared for landing, Northeast 480 you are cleared for landing. That same radar technology that guides aircraft and tracks hurrica
249 美国将继续对伊拉克施加压力 US: Pressure on Iraq to Continue After Attempted Shoot Down Dale Gavlak Washington 26 Jul 2001 21:03 UTC The Pentagon is calling Iraq's attempt to shoot dow
Science and technology 科学技术 Low-cost radar 低成本雷达 A programme worth watching 值得一看的节目 How air-traffic control can use television signals to plot aircraft 空中交通管制局如何利用电视信号找出飞行器位置?
OTTAWA, Jan. 27 (Xinhua) -- U.S. Secretary of Defense(防卫,防护) Robert Gates said here on Thursday that he expects Canada's continued support for the F-35 joint strike fighter plane program, which is under fire from opposition politicians he
The Kogalymavia airline flight came down just 23 minutes after taking off from Egypt's Sharm el-Sheikh for the Russian city of St. Petersburg. It's believed the plane had 224 people on board, 7 of whom were crew members. The Russian embassy is still