| 1. | The speed of light travels faster than the speed of sound
光的速度比声音的速度快 |
| 2. | When did the first measurement of the speed of sound take
第一次测量声速是在什么时候？ |
| 3. | In water the speed of sound will rise about four times
声音在水中的传播速度要快三倍左右。 |
| 4. | Virtual instrument ttg and the application in the measuring speed of sound
及其在声速测量中的应用 |
| 5. | Mach two is generally used to mean twice the speed of sound
通常指双音速，也可用来比喻达到较高层次的意思。 |
| 6. | The frequency , wave length and speed of sound are closely related
声音的频率、波长和速度三者是密切相关的。 |
| 7. | （ b ） the frequency , wave length , and speed of sound are closely related
声音的频率，波长和速度三者是密切相关的。 |
| 8. | Airliners in service at present cannot fly faster than the speed of sound
目前供使用的客运机飞行速度不能超过音速。 |
| 9. | As " the ratio of the speed of a body to the speed of sound in the surrounding medium "
是指物件在四周环境中移动的速度与音速的比值。 |
| 10. | You would need to travel at about 64 times the speed of sound to reach there in 15 minutes
如果你以64倍音速旅行，到达那里也要15分钟。 |
