非管制空域
- 网络uncontrolled airspace; U U ncontrolled ncontrolled A A irspace irspace
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非管制空域
uncontrolled airspace
...空域 (controlled airspace) 非管制空域 (uncontrolled airspace) A级空域 (class A) B级空域 (class B) C级空域 (class C) D级...
U U ncontrolled ncontrolled A A irspace irspace
... irspace irspace ) ) – – 非管制空域( 非管制空域( U U ncontrolled ncontrolled A A irspace irspace ) ) 中国民用航空总 …