您要查找的是不是：
- The speed of this aircraft is very high. 这架飞机的速度非常快。
- The speed of a runaway horse count for nothing. 脱缰之马的速度毫无价值。
- The speed of light is an important constant. 光速是一个重要的常数。
- The speed of the toy boat is variable. 玩具船的速度是可变的。
- When did the first measurement of the speed of sound take? 第一次测量声速是在什么时候？
- 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。
- The workers have timed the speed of the machine. 工人们已经调准机器的速度。
- The speed of rockets transcends that of airplanes. 火箭的速度快于飞机的速度。
- Scientists have determined the speed of light. 科学家们已测定出光的速度。
- The worker is timing the speed of the machine. 这名工人正在调整机器的速度。
- The worker is timing the speed of the machine . 这名工人正在调整机器的速度。
- The symbol for the speed of light in a vacuum. 表示真空中光速的物理符号
- A device for measuring the speed of sound in water. 速度计，速度表用于测量声音在水中的速度的仪器
- They had to ease the speed of their boat . 他们不得不减低船速。
- What's the speed of the film you're using? 你用的胶卷感光度是多少?
- Those people are measuring the speed of cars. 那些人正在测量汽车的速度。
- The speed of light is an invariant constant. 光速是一个不变常数。
- We are walking at the speed of one mile at hour. 我们以每小时一哩的速度行进。
- What was the speed of the spaceship? 飞船的速率是多少?
- The speed of a runaway horse count for nothing . 脱缰之马的速度毫无价值。
