acoustic resistance

1. Characteristic extraction of acoustic signals emitted from resistance spot welding process based on independent component analysis
   基于独立分量分析的点焊特征声音信号提取
2. Opposition to the flow of sound through a surface; acoustic resistance is the real component of acoustic impedance and acoustic reactance is the imaginary component.
   声音在通过一个表面时受到的阻力；声阻是声阻抗的实部，声抗是声阻抗的虚部。
3. Full size floors were also tested for acoustic insulation and for fire resistance.
   也会用整块地来测试它的隔音性和防火性。
4. It was experimentally proved for the first time that the maximum acoustic power output can be transferred to the load when the acoustic resistance of RC load equals to its acoustic capacitance impedance.
   首次通过实验验证了当声阻与容抗相等时，热声发动机向阻容负载传递的声功率最大。
5. Under the conditions of different relative densities of sand and different vertical pressures, the variations of acoustic emission and tip resistance during the penetration were investigated.
   针对砂土于不同相对密度与垂直应力之条件，探讨音波反应、锥尖阻抗在贯入过程之变化。
6. The acoustic radiation resistance matrix is combined with the velocity vector on a vibration surface to predict the total sound power radiated from the structure.
   利用声辐射阻力矩阵和振动面上的速度矢量预报了结构声辐射的总功率。
7. Due to a high air flow rate and a strong moise radiation in a colliery air shaft, it is the key to controlling noise successfully that the right and reasonable acoustic design for muffler and the calculation of resistance loss.
   煤矿风井空气流量大，噪声辐射强，正确合理的消声器声学设计和阻力损失计算是噪声控制成功的关键。
8. On the linear acoustic resistance of an orifice in an infinite thin plate
   关于无限薄平板中圆孔的线性声阻
9. The 3-D numerical methods are used to predict the acoustic attenuation performance and flow resistance characteristics of internal combustion engine exhaust silencers.
   使用三维数值计算方法预测内燃机排气消声器的声学性能和阻力特性。
10. A standing wave thermoacoustic engine connected with an RC ( acoustic resistance and acoustic capacitance) load was simulated with linear thermoacoustics to study the influence of load impedance on the performance of the thermoacoustic engine.
    为了探索负载的阻抗特性对热声发动机性能的影响，利用线性热声理论，对驻波型热声发动机驱动阻容负载进行了数值模拟。
11. When the acoustic resistance of the load is fixed, oscillating frequency, heating temperature and input power to RC load will increase along with the increase of the length of the pressure amplifier in a certain range.
    在负载的声阻固定的情况下，一定范围内振动频率、加热温度、负载入口声功随着压力放大器长度的增大而增大；
12. The computed and experimental results showed that maximal acoustic power can be transferred to the load when the acoustic resistance of the RC load is equal to its acoustic capacitive impedance.
    计算和实验结果表明，当负载的声阻与容抗相等时，热声发动机向阻容负载传递的声功率最大，此时，负载入口处的压力振幅和压比最小，板叠热端温度最高；
13. The result of the experiment verifies the conclusion of the theoretical simulation, and shows that the tightly packed structure has a satisfactory acoustic attenuation performance in a wide frequency range and a very low resistance loss.
    实验结果验证了仿真计算所得到的结论，表明所设计的水消声器不仅结构紧凑，而且在很宽的频率范围内都有令人满意的消声效果；
14. Equivalent Specific Acoustic Resistance of Sound Absorbing Materials
    吸声材料的当量声阻率
15. Furthermore, ZnO has properties of piezoelectricity and photoelectricity, so it can be applied as surface acoustic wave sensor, piezoelectric resistance and detection materials et al.
    此外ZnO具有优异的压电和光电性能，可以被用作声表面波器件、压敏电阻和探测材料等。
16. In 2 cases of acute rejection ( 2/ 18, 11%), the features of the acoustic images included the enlarged volume, thickened parenchyma and increased flood flow resistance index of all grade arteries in kidney grafts ( 0.80~ 1.0).
    急性排斥反应2例（2/18,11%）。超声图像特征为：移植肾体积增大，实质增厚，各级动脉血流阻力指数（RI）增高（均在0.80～1.0之间）；
17. According to the characteristics of array acoustic sensing unit and the voiceband, it designs the structure of sensor unit in the form of micro-cantilever beam, establishes the vibration mechanics model of micro-cantilever beam and the coupling equation of strain resistance.
    根据声阵列传感单元的特性和嗓音频率的范围，设计出微悬臂梁形式的阵列传感单元结构，建立微悬臂梁振动力学模型以及与应变电阻的耦合方程。
18. The method of computational fluid dynamics ( CFD) and test has been used to study the fluid dynamics and acoustic performances of resistance muffler.
    本论文用计算流体动力学（CFD）和试验法研究抗性消声器的流体动力学特性和消声特性。
19. Finally by comparing and analyzing the acoustic performance and pressure loss of the three different resistance mufflers, to select the better function muffler device.
    最后综合其声学性能和阻力特性，来选择功能较好的消声器。

noun

1. opposition to the flow of sound through a surface

   Synonym:    acoustic impedanceacoustic reactance