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aircraft fly

aircraft fly

aircraft fly

aircraft fly

1

Such "sonic boom clouds " can occur when aircraft fly fast enough to cool the air around them, causing moisture in the air to condense.

类似这样的 “音爆云 ”会在飞行器达到足以将周围空气冷却的速度时出现，空气中的湿气最终被液化。

4

When did the first aircraft fly ?

第一架飞行器是什么时候起飞的？

5

The hardwire and their characters of the transport aircraft fly-by-light control system

运输机光传操纵系统的硬件及其特点

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