But delays and inefficiencies in air travel are due in large part to an outdated traffic-control system that still relies on slow, ground-based radar stations and repetitive voice communication.
不过航空运输延迟和低效的主要原因还是过时的空中交通管制——一套依靠地面控制、反应迟缓的雷达站和不断重复的语音通讯建立起来的体系。
Air TRAFFIC CONTROL, a system comprised of ground and airborne components used to identify, track and locate aircraft.
空中交通管制，一个由地面设备和机载设备组成的系统。用来对飞机进行识别，跟踪和定位。
Air TRAFFIC CONTROL, a system comprised of ground and airborne components used to identify, track and locate aircraft.
空中交通管制，一个由地面设备和机载设备组成的系统。
One of the prevalent methods in air traffic control is ground holding based on traffic flow management.
推迟飞机起飞时间，将成本较高的空中等待转化成地面等待，是进行空中交通流量管理的一个有效方法。
One of the prevalent methods in air traffic control is ground holding based on traffic flow management.
推迟飞机起飞时间，将成本较高的空中等待转化成地面等待，是进行空中交通流量管理的一个有效方法。
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