人们眯着眼睛望向地平线，时不时大家安静下来，听着螺旋桨撞击空气的声音。
The men squint toward the horizon, and periodically everyone goes silent to listen for the sounds of blades beating the air.
沙砾“像桌球”一样互相撞击翻滚，然后被风吹到空气中。
Rolling grains of sand hit each other "like billiard balls, " said Kirby, and briefly fly into the air.
气象预报人员说，厄尔在撞击加拿大冷空气后的第二天，应该会彻底消散。
Forecasters say it should disintegrate completely in the next day as it hits colder air in Canada.
那么，我们一直被空气分子撞击着，可是为什么我们感觉不到呢？
So we're constantly bombarded by air molecules. So how come we don't feel that?
从撞击的空气中。
风在周围撞击，显示你在空气中有巨大的活力。
The wind is whipping around, showing you there are great stirrings in the air.
在实验中，利用空气炮发射鸟弹，撞击飞机全尺寸风挡，以模拟飞鸟和飞机的相互撞击。
In experiments, the bird body launched by a big air gun impacts the full scale windshield of the aeroplane to simulate striking between a flying bird and a flying plane.
局部收集系数反映了空气中过冷水滴的撞击特性，对其进行计算是防、除冰研究的重要方面。
It is a significant aspect for research of local collection efficiencies that reflect the impingement properties of the super cooling water droplets in the air.
燃气射流与空气流在进气道出口直接撞击不利于燃烧效率的提高。
The impinging jet injection device improves combustion efficiency. If the fuel streams impinge with the airstreams directly at the exit of air-inlet, it makes negative effect on combustion efficiency.
冰雹撞击试验系统是以压缩空气为动力的空气炮原理构建的，在设计时系统参数选择决定了试验的成功与否，同样在试验阶段时也需要根据技术要求选择各参数。
Aerocraft is easy to impact with hailstone and may cause serious damages during its flight, so it′s necessary to investigate hail impact on aerocraft by trial system.
冰雹撞击试验系统是以压缩空气为动力的空气炮原理构建的，在设计时系统参数选择决定了试验的成功与否，同样在试验阶段时也需要根据技术要求选择各参数。
Aerocraft is easy to impact with hailstone and may cause serious damages during its flight, so it′s necessary to investigate hail impact on aerocraft by trial system.
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