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- Based on Reily-integration, the sound pressure distribution and directivity formula of hexagonal piston's radiant far field are calculated out.And the directivity formula is simulated. 摘要利用瑞利积分,计算了六边形活塞声源辐射远场的声压分布以及指向性公式,并对指向性公式进行仿真研究。
- The sound pressure distribution in the interior cab is calculated with typical outside loads, which provides the evidence for the cab noise prediction and the acoustics characteristic improvement. 计算在典型的外界激励情况下车内声场的分布情况,为改善车内声学特性,对车内噪声进行预测提供了参考。
- On basis of the linearized Euler equation,the sound pressure is correlated with the unsteady pressure distributions on stator blade surface in the form of the Fredholm integral equation of the first kind. 具体从线化欧拉方程出发 ,将空间有限点的声压与静叶表面的非定常压力分布关联成第一类 Fredholm积分方程的形式。
- Calculation of Sound Pressure Distribution of Sphere Focusing Supersonic Field and Its Measuring Experiment 球面聚焦超声场计算与测量实验
- Measurement of sound pressure level for sound sign. 海船声号器具的声压级测量。
- sound pressure distribution 声压分布
- The audible sound pressure range is from 0 dB to 120 dB. 听觉范围为0分贝到120分贝。
- Ultra-low distortion at extreme sound pressure levels. 超低失真的极端声压级。
- By using double-exposed holographic interferometry, the distribution of sound pressure in the acoustic levitation field is analyzed. 利用二次曝光全息干涉术实现了对单轴式声悬浮声压场的研究。
- Metal lacing eyelets for optimum fastening and pressure distribution. 最好加速和减压的金属网状小孔。
- INTRACRANIAL SOUND PRESSURE LEVELS DURING IMPULSSE NOISE EXPOSURE Saljo A. 在噪音刺激下颅内声音压力水平。
- This curvature of the flow field alters the pressure distribution and the aerodynamic forces from their values in translational flight. 流场的弯曲使压力分布和空气动力与直线飞行时的值相比发生了变化。
- In addition, the effect of startup pressure gradient of Bingham fluid in stratum pressure distribution are analyzed. 分析了宾汉流体的启动压力梯度对地层压力分布的影响。
- The analysis of the hydrostatic pressure distribution is beased on the momentum exchange equation of varying mass. 在动量恢复方程的基础上,分析了主流道的静压分布。
- There is a remarkably wide range of frequencies and sound pressure levels over which the human ear can detect. 人类耳朵对声音频率和声压级的感应范围很广。
- In this paper, pressure distribution of gaseous slip flow in parallel plates microchannel was studied. 对平行平板微型槽中气体滑移流动的压强分布特性进行了研究。
- With the increase of the SPL, the nodes of sound pressure move Periodically, and sound radi... 在声源产压级较低时,声辐射压分布几乎处处为零,随着声压级增加,节点处声辐射压幅值增加,颗粒稳定性增强。
- For the PTD flow field, this thesis first presents inviscid flow solution of evolved pressure distribution. PTD内部流场问题,先不考虑黏性进行计算,并讨论PTD内部在不同时间的压力分布。
- Usually, the problem is how to reduce the sound pressure level, either at source or on the transmission path. 通常噪声问题的解决办法就是在其声源处或是在其传播途中降低其声压水平。
- Flue gas flow model is established based on gas flow to research the pressure distribution along the width of furnaces. 运用气体流动相关知识,建立炉气流动模型,研究沿炉宽方向上的压力分布。