超音速的英文：
supersonic
supersonic speed
supersonic velocity
ultrasonic

参考例句：

This moth's ear is tuned in to the bat's ultrasonic squeak
这种蛾的耳朵能收听到蝙蝠的超音速的尖叫声。

The range of a supersonic jet
超音速喷气式飞机的航程

The new generation of supersonic airliners
新一代的超音速客机

Developing the supersonic jet was quite an accomplishment.
开发超音速喷气机是一项了不起的成就。

Concorde inaugurated a new era in aeroplane travel.
协和式超音速客机开创了坐飞机旅行的新纪元。

This moth's ear is tuned in to the bat's ultrasonic squeak.
这种蛾的耳朵能收听到蝙蝠的超音速的尖叫声。

There was a huge bang; it sounded like a supersonic jet.
传来一声巨响，听起来像是超音速喷气式飞机的声音。

In conclusion we note the following general items concerning flow in supersonic nozzles
最后，我们归纳几个关于超音速喷管流动的一般原则。

Simulation of Unsteady Hypersonic Combustion Around Projectiles in an Expansion Tube
关于膨胀管中弹丸周围非稳态超音速燃烧现象的模拟

supersonic是什么意思：
adj. 超音速的
n. 超音速，超声波

Developing the supersonic jet was quite an accomplishment.
开发超音速喷气机是一项了不起的成就。

This is an instrument with which we can generate supersonic wave.
这是一台能产生超声波的仪器。

There was a huge bang; it sounded like a supersonic jet.
传来一声巨响，听起来像是超音速喷气式飞机的声音。

speed是什么意思：
n. 速度，速率；快速，迅速
v. 迅速前进，快行；促进；加速，使加速

The speed of a train differs greatly from the speed of an airplane
火车的速度与飞机的速度大不相同。

The car is gaining speed.
那辆轿车正在加速。

The worker is timing the speed of the machine.
这名工人正在调整机器的速度。

velocity是什么意思：
n. 迅速；快速；速度；速率

Normally the shear velocity is about half of the compressional velocity
一般地说横波速度大约是纵波速度的一半。

low-velocity drop
低速度空投

high velocity drop
高速度空投