The standard absorption coefficient measured in reverberation chamber is usually employed to characterize the absorbing surfaces in computer modeling of sound fields.
计算机声场模拟中，房间表面的吸声性能通常采用混响室法吸声系数来表示。
Influences of the transparent liquids` bulk modulus, dynamic-viscosity coefficient and the absorbed laser pulse energy in the breakdown region on the peak pressure, the sound energy and the dominant frequency of the laser induced expanding sound are analyzed.
建立了激光致声的产生和测量系统，对蒸馏水、酒精和甘油中的激光致声进行测量分析，分别计算了这3种透明液体在体积模量(0.2~7.0 GPa)、动力粘性系数(0.001~30.000 Pa·s)和所吸收激光脉冲能量(10~400 mJ)变化时对应的激光致声的相关数值。
Below 417℃, cobalt is in dense-hexagonal structure, it has lower frictional coefficient and sound wear resistance.
钴在417℃温度以下，为密排六方结构，具有低的摩擦系数，而具有很好的耐磨性。
The principle of determination of sound absorption coefficient of materials by transfer function method is introduced.
介绍了在阻抗管中采用传递函数法测量材料吸声系数的原理，详细介绍了使用双传声器进行测量的方法，指出了测试的频率范围取决于阻抗管的管径大小和传声器布置的位置。
However, for different sound fields, because of the difference in the space volume, shape and absorption coefficient, the receiving radius are different.
但对不同的声场空间来说，由于空间体积、形状和吸声系数的变化，声线密度是不同的，因此接收球半径也会不同。
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。
Yin Gete shows the perforated pipe installed in the standard plate resistance is by the sound hole of the flow Mach number, and coefficient proportional to the beam.
因葛特证明，装在管路中的穿孔平板其标准的声阻是与通过小孔的流束的马赫数及系数成正比。
A new control strategy is developed in which by canceling the adjoint coefficient of the former k ranks radiation modes, the sound pow...
在此基础上，文中提出了一种新的控制策略，即抵消前k阶声辐射模态的伴随系数，使得前k阶声辐射模态的声功率为零。
Objective: Study the influence of parameters such as attenuation coefficient, velocity of sound, and temperature of medium on focusing sound field.
目的：研究声衰减系数、声速、温度等媒质参数对声聚焦的影响。
Copper-base sprayed welding alloy is produced by adding B, Si, Ni, Mn, Al, Fe and P into the copper base, which has sound heat conduction or electricity conduction performance, being antirust, with low frictional coefficient and sound adhesive friction wear resistance, easy for cutting and being smooth.
铜基喷焊合金，是在铜基体中加入B、Si、Ni、Mn、Al、Fe、P等合金元素制成的，具有良好的导热，导电性和耐蚀性，摩擦系数低，耐粘着摩擦磨损性能优良，易切削，光洁度高。
The measurement of absorption coefficient is based on the assume that the sound field in reverberation chamber is fully diffused, however this will lead to uncertainty of absorption coefficient when sample is arranged in reverberation chamber.
该吸声系数的测量方法是建立在扩散声场基础上得到的，而实际混响室中放置吸声材料后声场并非为扩散场，由此将导致吸声系数的测量误差，影响声场计算机模拟的准确性。
Methods Use a standing wave tube to measure the sound absorption coefficient of many kinds of grain.
采用驻波管法测量了多种粮食的吸声系数。
sound absorbent perforated structure; thickness of cavity behind a plate; resonant frequency; sound absorption coefficient frequency curve
据有关实验结果表明，对于这些大空腔穿孔板结构，利用原有的公式估算出的共振频率 f0 与实际偏差较大。
Based on the acoustical properties of wall corner junction, theory analysis is employed to model sound transmission through junction, and then the transmission coefficient between two walls of junction has been calculated.
对建筑中墙角节点的声传递进行了理论分析，计算了其声透射系数和隔声量。计算结果和实验测试有良好的一致性，并介绍了节点隔声的测试方
In this paper, the method for calculation of velocity of sound, critical flow coefficient/function, isentropic exponent, constant pressure and constant volume heat capacity, and other thermodynamic properties in natural gas, supplied by AGA Report No.
介绍了美国气体协会输送计量委员会10号报告和ISO/DIS20765-1的主要内容及其提供的天然气声速、临界流系数、等熵指数、定压和定容比热容等热力学参数计算方法在天然气计量和化工等方面的应用。
Because in the aviation noise survey process, the instrument position, waits for many factors to be able highly to affect the measurement result, moreover the sound-level meter is unable in the survey process to learn current airplane parameters and so on power condition, not only like this increased the survey error coefficient, moreover enables the data not to have the commeasurability.
由于在航空噪音的测量过程中，仪器的位置，高度等许多因素都会影响到测量结果，而且在测量过程中无法获知当前飞机的功率状态等参数，这样不仅增加了测量的误差率，而且使得数据没有可比性。
One method is to calculate K3 by sound absorption coefficient α 0 (which is measured by standing wave apparatus) of sound absorption material.
一种是通过测量驻波管中的吸声材料的吸声系数α0来计算简易半消声室的K3；
Analysis on the Error of Calculating the Sound Absorption Coefficient Using the Reverberation Chamber Method
混响室法测定吸声系数计算误差分析
Sabine formula is usually used to calculate the sound absorption coefficient by the method of reverberation chamber. The error must be analyzed to make the sound absorption coefficient more accurate. In addition, Eyring formula is better for the exact calculation.
混响室法测定吸声系数常用赛宾公式来计算，在计算时必须分析其误差大小，使吸声系数的测定值更准确（准确的计算最好用艾润公式）。
The sound absorption coefficient would be increased with the increasing of the washing time.
洗涤次数增加，吸声系数也随之增大。