Launched from a standard runway, a hypersonic aircraft could fly faster than Mach 5 to strike anywhere in the world within two hours.
从标准跑道起飞，高超音速飞机能以5倍音速在两小时内出击在全球任何地点。
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。
Slower cruising — at about Mach 0.7, or seven-tenths the speed of sound, which is 5 percent to 10 percent slower than today's aircraft — and at higher altitudes, to save fuel.
更低速的巡航——大约0.7马赫，即音速的十分之七，比今天的飞行器低5 - 10%——并且飞行于更高海拔以节约燃油。
Both teams produced concepts for aircraft that can carry more than 100 passengers at cruise speeds of more than 1.6 Mach and a range of up to 5, 000 miles.
两个团队都提出了能在超过1.6马赫的巡航速度和最高5000英里航程的条件下搭载100名以上乘客的飞行器概念。
Experimental results of heat transfer to rough walls are given here for sphere cone models at Mach number 5.
本文介绍了来流马赫数5的条件下，典型球锥模型的粗糙壁热交换实验结果。
Experimental results of heat transfer to rough walls are given here for sphere cone models at Mach number 5.
本文介绍了来流马赫数5的条件下，典型球锥模型的粗糙壁热交换实验结果。
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