northrop grumman rq-4 global hawk
添加释义
Northrop Grumman RQ-4 Global Hawk
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abstract:
The Northrop Grumman RQ-4 Global Hawk is an unmanned aerial vehicle (UAV) surveillance aircraft. It was initially designed by Ryan Aeronautical (now part of Northrop Grumman), and known as Tier II+ during development.
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