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。
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.
地面效应是汽车空气动力学研究的主要难点之一。
The ground effect is one of the main difficulties in road vehicle aerodynamics.
试验结果表明，该模型在空气动力学特性变化强烈和动力学尾流效应起主要作用的地区有更准确的预测。
The result indicated that more accurate predictions are expected in situations where local aerodynamic characteristics strongly vary with time and where dynamic wake effects play a significant role.
结果表明：缆索风荷载对悬索桥静风效应的影响比较显著，但对于空气动力稳定性则没有影响。
It is shown that the cable wind load affects remarkably the aerostatics of long-span suspension Bridges, but its effect on the aerodynamic stability becomes negligible.
高速铁路隧道设计参数主要是由高速列车进入隧道所诱发的空气动力学效应确定的。
The determination of design parameters for tunnels on high speed railway is mainly affected by aerodynamic events arising from the running of high speed train in tunnels.
因而，对于隧道空气动力学效应的作用机制和其减缓措施进行深入研究是非常必要的。
Therefore, lucubration of tunnel aerodynamic effect's mechanism and corresponding alleviation measure is very necessary.
本文采用CFD技术，对存在地面效应时二维机翼在粘性流场中的空气动力特性进行了研究。
Aerodynamic characteristics of 2d wing in viscous flows in the presence of ground effect were investigated by CFD techniques.
本文采用CFD技术，对存在地面效应时二维机翼在粘性流场中的空气动力特性进行了研究。
Aerodynamic characteristics of 2d wing in viscous flows in the presence of ground effect were investigated by CFD techniques.
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