The volume of scheduled flights is straining the air traffic control system.

定期航班的数量使空中交通控制系统受到压力。

《柯林斯英汉双解大词典》

The accurate real-time forecast of traffic volume is the premise and basement of the dynamic traffic control and guidance.

实时、准确的交通量预测是实现动态交通流控制及诱导的前提和基础。

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Then it establishes the traffic convergence model of ramp, and analyses the influence effect of ramp control on the maximum service traffic volume.

其次通过建立匝道合流交通模型，分析匝道入口控制对道路最大服务交通量的影响；

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Among the most dramatic of Bush's proposals is a fee that the Federal Aviation Administration would charge airlines to help pay for new air traffic control services, which are becoming strained by an increasing volume of air traffic.

FORBES: Magazine Article

The administration's funding authorization expires Sept. 30, and it needs more money to address the booming volume of air traffic, primarily because the air traffic control system needs safety and security upgrades.

FORBES: Magazine Article