The Concorde's delta wing made the plane's sustained cruising speed of Mach 2 possible.
协和飞机的三角翼飞机作出的持续巡航速度2马赫的可能。
HTV-2, an unmanned hypersonic aircraft designed to travel at Mach 20, failed during a test flight last month.
HTV - 2，一架巡航速度设计为20马赫的无人超音速飞机，于上月试飞失败。
An experimental investigation on effects of oscillating shock generated by liquid jet on reinforcement of hydrogen-fueled supersonic combustion in Mach 2 airstream was completed.
研究了在燃烧室入口马赫数为2的超音速燃烧中，液体射流所产生的振荡激波对强化超音速燃烧的作用。
I quickly increased our speed, calculating the time it would take for the weapons-most likely SA-2 and SA-4 surface-to-air missiles capable of Mach 5 - to reach our altitude.
我立即加速并计算着导弹到达黑鸟飞行高度所需的时间 - 它们很可能是苏联制SA-2和SA-4地对空导弹，最大速度可达3马赫。
The design was intended for flight at Mach 3, but it proved less than ideal at that speed, and the two aircraft together logged less than 2 hours of Mach 3 flight time.
设计的目的是为在3马赫飞行，但是它证明了在这个速度并不理想，而两架飞机一起记录少于2小时3马赫的飞行时间。
The design was intended for flight at Mach 3, but it proved less than ideal at that speed, and the two aircraft together logged less than 2 hours of Mach 3 flight time.
设计的目的是为在3马赫飞行，但是它证明了在这个速度并不理想，而两架飞机一起记录少于2小时3马赫的飞行时间。
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