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告警服务
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告警服务
Encyclopedia
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空中交通服务
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alerting service
告警服务
当航空器可能遇险或出现紧急情况需要进行搜寻和救援工作时,由空中交通管制单位按照一定的规则和程序,提供通信、导航、雷达设备,开展搜寻、推测航空器位置和协助航空器驾驶员处理险情等的服务。是空中交通服务的重要内容。
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archive compiling and research
archive documents of August 1 Nanchang Uprising
archive file directory
archive group
archive management system of aviation industry
archive recording
archives
archives acquisition
Archives Administration
Archives Administration and Records Management Studies
Archives Administration Management Conspectus
Archives and Manuscripts
Archives and Manuscripts—— SAA Basic manual series
Archives and Records Association
archives and storeroom
archives appraisal committee
archives appraisal working group
archives appraisal work organization
Archives Arrangement and Management
archives arrangement scheme
archives backup from different materials
archives backup from different places
archives box
archives building fire warning
archives business expenses
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