Acoustic material and heat-resisting heat-storing material is filled in the porous inner tube and the housing body.

To use ceramisite in acoustic material for underground tunnel

利用陶粒制备地铁吸音材料

Acoustic measurement and analysis in Nanjing Subway Engineering Investigation

南京地铁工程勘察中声波测试与分析

Study on the Calibration Technology of the Acoustic Measurement of Suspended Sediment Concentration

声学方法监测悬浮物浓度的定标技术研究

Simulation of underwater acoustic measurement system cable interference voltage

水声测量系统信号线缆干扰电压的仿真计算

On the acoustic measurement method of rock mass stresses

岩体地应力声波测试方法的探讨

Acoustic measurement and spectral characteristic analysis of two kinds of pulse signal

两种脉搏信号的声学检测与谱特征分析

Experimental Research on Reconstruction of Velocity Field in Furnace Using Acoustic Measurement

声波法重建炉膛速度场的实验研究

A multi-line array shape measurement method based on acoustic measurement

一种基于声学测量的多线阵阵形监测方法

Research on application of spectrum analysis in acoustic measurement of seabed sediments

海底沉积物声学测量中频谱分析方法应用研究

On the Acoustic Power Radiated by an Electrical Machine

电机电磁噪声的辐射声功率

Determination of acoustic power on acoustic radiation modes

基于声辐射模态确定声功率

Research of Underwater Acoustic Power Amplifier and Broadband Matching Technique

水声功率放大器与宽带匹配技术研究

Survey and Determination of Acoustic Power Level of Railway Regular Sound Source

铁路常见固定性声源声功率级的测定

Finite Element Analysis of Acoustic Power Radiation by Electrical Machines

利用有限元法分析电机辐射的声功率

Analysis and Research on acoustic power recovery in pulse tube refrigerator

声功回收型脉管制冷机的分析与研究

Three points method for measuring acoustic power of high intensity sound sources

三点法测量强声源声功率

Radiation Force Calculation and Acoustic Power Measurement of High Intensity Focused Ultrasound in Acoustic Field of an Artificial Abortion Equipment

高强度聚焦超声终止早孕机声场的辐射力计算与声功率测量

This paper also studied the influence of acoustic power density, temperature and other parameters on the ultrasonic cleaning through experiment.

研究了声功率密度、温度等重要工艺参数对超声波清洗的影响规律。

Moreover, taking on the Rayleigh integral the far field acoustic pressure and the directivity formula is obtained.

并对其声场远场采用瑞利积分推导了一般表达式和指向性公式。

Measurement of the Frequency Response of the Acoustic Pressure Sensitivity of the Fiber-Optic Hydrophone with Linear Sweep Signal

利用线性扫频信号测量光纤水听器的声压灵敏度频响特性