The new airplane flies twice the speed of sound.
这架新飞机的飞行速度是音速的两倍。
The aeroplane will travel at twice the speed of sound.
飞机将以两倍于音速的速度飞行。
Here the sheets of sound, downbeat accents, repetitions, and great speed are part of each solo, and the variety of the shapes of his phrases is unique.
在这里，一张张的声音、重拍的重音、重复和极快的速度是每个独奏的一部分，他的乐句形状的变化是独特的。
The new airplane flies at twice the speed of sound.
这架新式飞机以两倍于音速的速度飞行。
Their data showed that the speed of part of the condensate exceeded the speed of sound, and they had therefore made an acoustic event horizon.
之后他们压缩减压能产生声波的这种气体。数据表示部分冷凝物的速度超过声速，因此他们制出了声音的黑洞边界。
They found that at the lower speed sound levels regularly exceeded 88db, the equivalent of a diesel train passing or a construction site.
他们发现汽车低速行驶的时候，噪音水平通常超过88分贝，这个数值与柴油机车经过时或是建筑工地的噪音水平相当。
A sonic boom is the loud crash and shaking that happens when a jet plane goes faster than the speed of sound.
声爆是当喷气式飞机超音速行驶时产生的巨大碰撞和摇动声。
The emerging sunspot region seems to boost the local speed of sound, thereby hastening the refracted return of sound waves passing through that part of the solar interior.
浮现的黑子区似乎能使当地的声速增加，从而使声波更快地通过这个区域。
The speed of sound also depends on Young's modulus.
声速也同样，取决于杨氏模量。
The plant would store cheap "off peak" electricity in 2,500-pound flywheels that turn faster than the speed of sound.
这座储能厂会把“闲时”的电力储存在2500磅的飞轮电池中。 飞轮的轮缘线速度之高，超过声速。
He would exceed the speed of sound within the first 40 seconds and eventually approach 1, 000 miles an hour.
在下落的前40秒内，他将超越音速，最终他的下降速度可达到1000英里每小时。
But even if they make it to market soon, don't expect to be zipping around the country at the speed of sound.
即使这些飞机很快的投入市场，也不要期待以音速飞行的飞机可以在国家间呼啸而过。
Scramjets engines can not start until the plane flies faster than the speed of sound.
超高速冲压喷气发动机引擎在飞机超过音速的情况下不能启动。
It could speed the transfer of appropriate energy technology to poor countries and give them objective advice on an optimal energy mix that is safe, secure and environmentally sound.
它能够促进合适的能源技术在穷国的普及，就安全、可靠、具有环境友好特点的最优能源组合为穷国提供客观建议。
In 1997 at Black Rock Desert, Nevada, he drove Thrust SSC to become the first person to break the sound barrier in a car and set the existing land-speed record of 763mph.
1997年在内华达州黑岩沙漠，他驾驶“推进”号超音速车成为突破汽车音障的第一人，并创下目前时速763英里的地面速度记录。
If you go much faster, the center of lift moves back on the wing, pushing the nose down and increasing velocity, until you soon approach the speed of sound.
如果飞机飞的太快的话，升力的重心就会从机翼转移到前半部机身上，飞机就会下降，速度会接近音速。
Its top speed would be 0.8 mach-that is, 0.8 times the speed of sound or around 600 miles per hour, slightly slower than the coming generation of airliners.
其最高时速将达到0.8马赫——即音速的0.8倍，约合每小时600英里，比起下一代民用客机的速度稍逊一筹。
As myriad technologies mature, new sorts of aircraft become possible. Unmanned aircraft have flown at more than five times the speed of sound.
因为诸多技术已经成熟，新型飞机问世不是没有可能，无人机能以五倍音速以上巡航。
It was first suggested in 1995 that the intense pressure waves, which can briefly exceed the speed of sound, could come from trombones.
在1995年，人们首次提出，长号能产生一种高能压力波，它的速度能略超音速。
Slower cruising — at about Mach 0.7, or seven-tenths the speed of sound, which is 5 percent to 10 percent slower than today's aircraft — and at higher altitudes, to save fuel.
更低速的巡航——大约0.7马赫，即音速的十分之七，比今天的飞行器低5 - 10%——并且飞行于更高海拔以节约燃油。
The speed of sound is - 340 meters per second-- - it depends a little bit on the temperature-- about 770 miles per hour.
声音的速度是,340米/秒-,它有些取决于，气温-,大概是770公里/小时。
A sonic boom is the thunder-like noise a person on the ground hears when an aircraft or other type of aerospace vehicle flies overhead faster than the speed of sound or supersonic.
音爆是当飞机或其它类型的飞行器以超音速飞过头顶时，地面上的人听到的类似雷声的噪音。
Without proof-- - you will see this if you ever take 803-- I will tell you that the speed of sound is the square root of Young's modulus divided by the density of the material.
现在不证明-,你们将在803章学到-,我告诉你们声速,是杨氏模量的平方根,除以介质的密度。
That staging point is expected to come at about the 124-second mark, when the supersonic Ares I-X rocket is traveling Mach 4.7? More than four times the speed of sound, its Max speed for the flight.
分离时刻预计在124秒时，这时超音速火箭战神i - X以4.7马赫的速度飞行——这是音速的四倍，也是飞行的最高速度。
A scramjet is a type of jet engine that USES compressed air in place of conventional turbines to create thrust. Read "U." S. Developing Jets that Fly Five Times the Speed of Sound.
超音速燃烧冲压喷气发动机是利用压缩空气替代常用的涡轮，形成推力的一种喷气发动机。
The X-51A burned for more than 200 seconds and accelerated the craft to five times the speed of sound.
X-51A起动超过200秒，促使飞行器速度提高到音速的五倍。
And each design has to fly up to 85 percent of the speed of sound; cover a range of approximately 7, 000 miles; and carry between 50, 000 and 100, 000 pounds of payload, either passengers or cargo.
还有就是要求所有设计的飞行器的速度必须不低于85%音速水平；航程必须达到7000英里；在负载量上无论乘客还是货物必须达到50,000到100；000磅。
How can we calculate the speed of sound?
我们怎样计算声音的速度？
How can we calculate the speed of sound?
我们怎样计算声音的速度？
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