national airspace system

基本解释

The national airspace system, however, …
国家空域系统，但是，…
Under the award, SRA International will provide a low-cost ground surveillance (LCGS) solution for small- to medium-size airports in the National Airspace System.
根据合同，SRA国际公司将为国家空域系统的中小规模机场提供一个低成本地面监视（LCGS）解决方案。
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This closed-end management system is in a specific historical circumstances and technical conditions, formed to defend its national airspace, to ensure flight safety has played an important role.
这种封闭式管理体制是在特定的历史环境和技术条件下形成的，其在保卫国家领空、保证飞行安全方面发挥了重要作用。
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The participants in the challenege will get a two month set of data from the National Airspace System, which includes a slew of data such as flight number, origin, destination, take-off time, arrival time, latitude and longitude at frequent interim waypoints along the journey and weather and wind data.
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What the NTSB uncovers regarding the FAA's safety certification program could have important implications for the agency's ability to handle other technology challenges, including the transition to a new air traffic control system and the introduction of unmanned aircraft into the national airspace, said Jim Hall, a former safety board chairman.
NPR: NTSB Probes Safety Testing Of Boeing 787 Batteries