This article describes on line proving of natural gas flow meters by using sound speed nozzles.
本文叙述了用音速喷嘴在线标定差压式天然气流量计。
Ocean sound speed, attenuation, suspended sand size and so on are all important ocean parameters.
海洋声速、声衰减、温度、盐度、悬浮物等都是海水的重要参数。
The water sound speed and temperature can be calculated by measuring Brillouin scattering frequency shift.
借助测量水体布里渊散射的频移，可得到水体声速或温度。
Also it analysed the cause of the faults of the electronic displaying ruler in sound speed measuring unit.
对于声速测定仪中电子数显尺的常见故障原因进行了分析，并总结出维修方法。
The result indicates that the sound speed is related to the void fraction, local pressure and flow pattern.
试验结果表明，气液两相流音速与气泡率、当地压力及其流型有关。
The results show that wind and the sound speed profile have little influence on air-to-water sound transmission.
结果表明：空气中风速剖面和声速剖面对空气中声传播有很大影响，但对于透射进入水中的声波影响很小。
The results showed that using single sound speed profile at source produced errors at simulation range large that 10 km.
其结果显示距声源10公里外，只使用单一声速剖面之音传模拟会产生较大的误差；10公里之内差值小于1分贝。
The measurement of sound speed in the air is studied in the experiment by phase comparison method and standing wave method.
通过实验，应用相位比较法和驻波法对空气中的声速测量进行了研究。
The result indicates that the sound speed of gas liquid two phase flow is much lower than single phase liquid or air medium.
结果表明：气液二相流音速比单相液体或空气介质低得多，流动机构对音速变化有显著影响。
The result shows that there are three basic types of sound speed profile structure in sea areas of China: D-type, S-type and T-type.
结果表明，中国近海的声速剖面结构可分为深海型、浅海型和过渡型三个基本类型。
Sound speed nozzles have the advantages of high-accuracy, stable-performance and convenient to operate. It is an ideal standard gas flow rate facility.
音速喷嘴具有精度高、性能稳定，操作方便等优点，是理想的气体流量标准设备。
Measurements of fluid density, viscosity, sound speed, and continuous refractive index are made downhole under reservoir temperature and pressure conditions.
所有的数据，包括液体密度、粘度、声速、连续折射率，都在井下油藏温度和压力条件下测得。
In this paper, the interaction between a cw plane wave and a plane pulse travelling with sound speed is considered. Both of them satisfy the homogeneous wave equation.
本文讨论一列平面波与一列平面行波脉冲的声相互作用，显然这两个波不仅都满足波动方程，而且可以用来讨论公共区之外的声散射声问题。
The calculated results show that strong vibrating source, low gravitational level and sound medium with large density and small sound speed will enhance the levitation ability.
结果表明，提高声源强度、降低重力水平或者采用密度大声速小的气体介质有利于提高声悬浮能力。
The idea is to help companies design and sell age-friendly products - with customizable font size, say, or sound speed - much the way they did with environmentally friendly products.
他们的思路是帮助公司设计并出售老年人喜爱的产品——公司可以定制他们需要的产品的字体大小或者语速的快慢——就好像他们在做环境友好型的产品一样。
It is found that the pressure and velocity disturbances run at sound speed, the entropy and components at flow speed, the temperature and density partly at sound speed, partly at flow speed.
发现压力和速度主要体现声特征，熵和组分主要体现流特征，而密度和温度既体现声特征又体现流特征。
The aeroplane will travel at twice the speed of sound.
飞机将以两倍于音速的速度飞行。
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 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。
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。
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。
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。
When I speak to you, my sound reaches you with that speed.
当我和你们说话，我声音用这速度传播。
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。
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。
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。
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。
As the jet plane rushed through the air, its speed broke the sound barrier and produced great heat.
由于喷气式飞机穿过空气，它的速度超过了声障，继而产生了大量的热。
As the jet plane rushed through the air, its speed broke the sound barrier and produced great heat.
由于喷气式飞机穿过空气，它的速度超过了声障，继而产生了大量的热。
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