At altitude, the air pressure is lower, and so are aerodynamic effects such as drag and lift, ultimately causing balls to travel faster and straighter than they would at lower altitude.

由于地处高海拔地区，气压较低，因而作用在球上的阻力及升力所产生的空气动力效应也会发生相应反应，最终导致球在空中飞行速度比在低海拔地区快，飞行的路线也更直。

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The vertical stiffness of the air spring system was calculated, and the effects of air pressure and cord Angle on it were analyzed.

计算了空气弹簧系统的垂向刚度，并分析了气体压力和帘线角对垂向刚度的影响。

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The effects of quench air pressure, velocity and unevenness on Uster value, M rate and after-processing property of polyester POY are mainly discussed.

讨论了侧吹风的压力、速度以及风速分布不匀对涤纶POY乌斯特值、M率和后加工性能的影响。

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