这种新型战斗机的巡航速度为声速的两倍。
实验是在日本室兰工业大学的超声速风洞中完成的。
The experiment was done in the supersonic wind tunnel of Muroran Institute of Technology.
当我小的时候我渐渐地知道光速比声速快。
I had known that light travels faster than sound gradually when I was young.
我们的老师昨天告诉我们，光速是比声速快的。
Our teacher told us that the speed of light is faster than that of sound.
海洋声速、声衰减、温度、盐度、悬浮物等都是海水的重要参数。
Ocean sound speed, attenuation, suspended sand size and so on are all important ocean parameters.
他发现声速面通常是不连续的。
He found that the sonic surface was, in general, discontinuous.
本文的研究对高超声速弹丸材料选择和外形设计具有一定的参考意义。
This research has some reference value on hypersonic projectile material selection and shape design.
阐述了在进行高超声速飞行器外形设计中，应用试验设计方法的必要性。
The essential of using experimental design method to configuration design of hypersonic aircraft are expounded.
通过地面试验和高超声速非平衡流的研究，取得了再入突防气动物理的重要进展。
Through ground test and hypersonic flow research, he made great progress in air-breathing hypersonic technology.
这些特点使得高超声速飞行器的飞行控制设计极具挑战性。
All these features make hypersonic flight control design a great challenge to researchers.
随时间变化的温度梯度与金属内部应力区的相互作用会导致超声速产生一种明显的变化。
The interaction of temperature gradient with internal stress profile would result in time-varying velocity shift.
随时间变化的温度梯度与金属内部应力区的相互作用会导致超声速产生一种明显的变化。
The interaction of temperature gradient with internal stress profile would result in time-varying velocity shift.
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