Through Sound density theory, the burning noise's radiation progress approach was successfully identified.
用声强法成功地识别出燃烧噪声的辐射途径。
Variations in wood density affect vibrations, and therefore, sound.
木材密度的变化会影响振动，因此也会影响声音。
This wave of excess density is sound.
这种过剩密度的波就是声波。
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。
After partition the pipe into calculation cells, the sound velocity, fuel density, fuel pressure and flowing velocity at every calculation crunode in different time are gained.
在对油管合理地划分计算单元后，可求解得到油管各个结点在不同时刻的燃油音速、密度、压力和流速等特征参数值。
Influence of compressive ratio and density on sound absorbing property of foamed aluminum made by bubbling method has been studied and compared with that of Japanese sample.
研究了压缩率和密度对发泡法制备的泡沫铝样品吸声性能的影响，与报道的日本用发泡法制备的泡沫铝样品的研究结果进行了比较。
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。
As an example, the distribution of the detonation pressure, density, particle and sound velocity along the detonation profile are given for TNT.
以TNT为例进行了计算，给出了其爆轰波内压力、密度、流速和声速等参数的分布。
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。
It found that the graphite changed the density of the coating, and improved the sound-absorption coefficient of the coating.
试验结果表明，石墨改变了涂层的密度，提高了涂层的吸声系数。
Rhythm of the music of time in the density and intensity of the sound arrangement, visual rhythm involving shape and color arrangements.
音乐的节奏是时间中的声音密度与强度的安排，视觉上的节奏涉及形与色的安排。
A frequency domain characterization method using low frequency ultrasound is put forward to estimate parameters of ultra thin elastic layers, such as: the sound velocity, thickness and density.
本文提出一种定量无损估计超薄弹性层声速、厚度和密度参数的低频超声波频域定征方法。
The structural topology optimization method—variable density method is used to optimize the topology of an acoustic_box for interior sound pressure reduction.
基于变密度拓扑优化方法和声-结构耦合系统有限元模型，对四角固支箱体模拟的飞机座舱进行了减振降噪分析。
A set of formulas has been developed to calculate the atmospheric temperature, density, pressure, the speed of sound etc. of Standard Atmosphere 1976.
本文给出了计算1976标准大气表中温度、密度、压力、音速等诸参数的数学表达式。
For the geological property of Xihu Trough Area in the East China Sea, density and sound wave in the logging data is used to set up the wave impedance curve.
根据东海西湖凹陷地质特点，利用测井信息中的密度和声波建立波阻抗曲线。
Based on measuring the cross-spectrum density of sound pressure between two hydrophones, the facility for underwater sound intensity measurement is investigated and designed.
基于双水听器互谱测量法，研制的水声声强测量设备可用于测量水下声源产生的声场中任意点的声强量值或任意面上的声强量值分布。
Scientists know that the spin states of iron's electrons help govern physical properties of the mantle such as its density and the speed with which sound passes through it.
科学家知道铁的电子旋转状态帮助治理披风的有形态例如声音穿过它的它的密度和速度。
In addition, the monotonic relations of density, void ratio and sound wave velocities for sands with different water content are also presented.
此外分析了在各种不同含水量时，容重、空隙比与波速的单调变化关系，并给出了相应的表达式。
The speed of sound and the density in glycerol—alcohol mixtures is measured.
测量了不同浓度的甘油、乙醇混合液的声速和密度，计算了超额绝热压缩系数。
In-depth study, we research on how to use logging data such as sound waves, density, natural gamma to obtain rock parameters, and study how to use indoor core test to amendment it.
深入研究了如何利用声波、密度、自然伽马等测井资料确定岩石力学参数的方法，并研究了如何利用室内岩心试验对测井资料进行简单的修正。
In chapter two, wave motion equation, sound energy, sound energy flux density, sound intensity and its scaling method and the theorem of two-microphone sound intensity have been introduced.
第二章介绍波动方程、声能、声能流密度、声强及度量方法、双传声器互谱声强测量原理。
The experiment shows: the change of the velocity of sound through normal density alit is regular and directly proportional to the strength of alit;
结果表明：在正常密度水泥石实验中一般声速反应较规则，基本与强度正相关；
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。
The results show that the best sound absorbing property can be obtained at a critical compressive ratio 40%, The sound absorbing property increases with the decrease of density.
结果表明：压缩率达4 0 %时，可获得最佳吸声效果，随密度的减小泡沫铝吸声性能增大。
High density closed-cell foam backing: sound reduction and comfort underfoot.
高密度闭孔泡沫背衬：吸收噪音并提供舒适的脚感。
High density foam core provides insulation and sound attenuation;
高密度海绵内芯有效隔热和隔音；
When the nuclear density is near or greater than the saturation density, the sound-like non-trivial solution could be found.
当核密度靠近或者大于核物质的饱和密度时，这样的类声波非平庸解是可以存在的。
Objective To explore the effect foot position on detection of speed of sound during ultrasonic detection of calcaneal bone mineral density.
目的了解足位变化对跟骨超声骨密度检测声速的影响。
Objective To explore the effect foot position on detection of speed of sound during ultrasonic detection of calcaneal bone mineral density.
目的了解足位变化对跟骨超声骨密度检测声速的影响。
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