So it's not necessarily the volume of traffic, but rather a sudden interruption in the flow that causes delays.

所以说，造成阻塞的不一定就是车流量大小，而是会在车流中引起延迟的突然中断。

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With explosive increase of air traffic volume in China, how to carry out air traffic flow management becomes more urgent.

随着中国交通流量的不断增长，如何更有效地实施流量管理的问题日益突出。

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Initially set velocity, density of traffic flow, traffic volume of service and the rate of traffic load as the measurement indicators.

对航道服务水平进行定义，并初步确定速度、交通流密度、服务交通量和交通量负荷比等四项度量指标。

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