A startled armadillo jumps straight into the air with an initial velocity of 18 feet per second.
一只受惊的犰狳以18英尺每秒的速度跳向空中。
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
咳嗽可导致气管的空气通过的速度超过音速—每秒超过一千英尺！
The door and window open at a right angle cause a draught of thirtytwo feet per second according to the law of falling bodies.
按照物体坠落的规律，门窗开成直角形便导致每秒钟三十二英尺的穿堂风。
In this case, the 33 megajoules launched the shot 5,500 feet per second, exceeding the speed of sound and releasing a sonic boom.
如若这样，那么3千3百万焦耳发射出的炮弹速度高达每秒5500英尺，这一速度超越了音速，会产生音爆。
In this case, the 33 megajoules launched the shot 5, 500 feet per second, exceeding the speed of sound and releasing a sonic boom.
如若这样，那么3千3百万焦耳发射出的炮弹速度高达每秒5500英尺，这一速度超越了音速，会产生音爆。
In a Stanford press release, Cantwell says the nitrous oxide can heat an engine to almost 3, 000 degrees Fahrenheit and expel nitrogen and oxygen at 5, 000 feet per second.
Cant well教授在斯坦福出版的新闻稿中说，氧化氮能把发动机加热到华氏3,000度，排出氮气和氧气每秒钟5,000英尺。
In a Stanford press release, Cantwell says the nitrous oxide can heat an engine to almost 3,000 degrees Fahrenheit and expel nitrogen and oxygen at 5,000 feet per second.
Cant well教授在斯坦福出版的新闻稿中说，氧化氮能把发动机加热到华氏3,000度，排出氮气和氧气每秒钟5,000英尺。
Using high-density, lithium-ion batteries, the device, including its harness, weighs 20 pounds and can propel a person up an anchored rope at 10 feet per second, Ball said.
采用高密度、锂离子电池、仪器，包括其利用，重达20磅，一个人就可以了锚绳10英尺每秒，球说。
To win the competition, a vehicle has to climb all the way up the kilometre-long cable, travelling at an average speed of five meters (16 feet) per second.
赢得奖金的标准是，设计者的机械必须能够全程攀上长达一公里的轨道，同时平均速度不能低于每秒5米（16英尺）。
With all inlet doors tightly shut, at 3.24 Mach, the J-58s are more like ramjets now, gulping 100, 000 cubic feet of air per second.
我们正以3.24马赫飞行，所有的进气口都紧紧关闭，两个J-58引擎就像火箭推进 器一样全速运转 -每秒吞吐100000立方英尺的空气。
When threatened, they can drop from a tree into the water and sprint, upright, about 5 feet (1.5 meters) per second across the surface.
当遇到危险，它们就从树上跳到水里，然后直立身体，以每秒5英尺(1.5米)的速度在水面上奔跑。
Sound travels through air in waves about 1,115 feet (340 meters) per second.
声音以声波形式在空气中传播，速度约为每秒1，115英尺 （340米）。
According to the capacity badge the elevator runs up to 350 feet per minute or 1.8 metres per second.
根据负载量告示牌，电梯最高可以每分钟350呎或每秒钟1.8米运行。
According to the capacity badge the elevator runs up to 350 feet per minute or 1.8 metres per second.
根据负载量告示牌，电梯最高可以每分钟350呎或每秒钟1.8米运行。
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