But it's also a matter of accuracy and closing speed.
精度和接近速度也很重要。
Speed control Valves are available for controlling valve opening or closing speed with pneumatic actuators.
速度控制阀可以用来控制阀门气动执行器的开启或关闭速度。
The higher the closing speed of two aircraft heading towards each other, the bigger the PAZ required, because the pilot needs more time to react to a warning.
两架相向飞行的飞机速度越高,所要求的“保护空域”越大,因为飞行员需要更多的时间对预警做出反应。
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