总部设在联合王国诺丁汉的英国地质勘探局的一位地震专家Richard Luckett说，从1751年以来，这个体系从来没有发生过类似强度的地面震动。
That system has not produced a quake of similar magnitude since 1751, says Richard Luckett, a seismologist at the British Geological Survey, which is headquartered near Nottingham, UK.
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。
But delays and inefficiencies in air travel are due in large part to an outdated traffic-control system that still relies on slow, ground-based radar stations and repetitive voice communication.
基于军事卫星应用系统对地面战场的作战保障，建立其作战效能评估指标体系；
Based on military satellites application system's battle guarantee Which is given to ground war field, its battle efficiency evaluation index system is set up.
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