speed of sound例句
- The speed of sound in water is about four as great as in air.
声音在水中的速度是空气中的四倍左右
- 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。
- When did the first measurement of the speed of sound take?
第一次测量声速是在什么时候？
