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发表于:2017-01-08
Britishairspacewasclosed.ThejetenteredChineseairspacewithoutpermission.We'renowenteringthedesignatedairspace.Buttheproblemoflimitedairspaceremains.AnaircraftintrudedChin...
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发表于:2019-01-29
Thisclosed-endmanagementsystemisinaspecifichistoricalcircumstancesandtechnicalconditions,formedtodefenditsnationalairspace,toensureflightsafetyhasplayedanimportantrole.It...
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发表于:2024-02-23
1、Alsoallowsyoutosailinacontrolledairspace.2、UncontrolledairspaceisdesignatedClassF,whilecontrolledairspacebelow5,490mabovesealevelandnotinthevicinityofanairportisClass...