1.
In this paper, the principle and primary results of measure ultrasonic sound velocity and attenuation coefficient by ultrasonic syntonic method are introduced.
本文介绍利用超声共振法测量声速和声衰减系数的原理及自来水和乙醇的测量结果。
2.
DROPLET SIZING OF SUBMICRON EMULSIONS BY ULTRASONIC ATTENUATION AND VELOCITY SPECTRA
超声衰减和速度谱测量亚微米乳液的粒径
3.
Measurement of the longitudinal wave velocity and attenuation for underwater acoustical materials--Pulse-tube method
GB/T5266-1985水声材料纵波声速和衰减的测量脉冲管法
4.
Numerical study on acoustical attenuation and acoustical velocity in suspension of superfine particles-A comparison of four models
超细颗粒悬浊液中声衰减和声速的数值模拟——4种模型的比较
5.
ULTRASONIC VELOCITY AND ATTENUATION COEFFICIENT, DENSITY AND ADIABATIC COMPRESSIBILITY OF PETROLEUM ETHER UNDER HIGH HYDROSTATIC PRESSURE
石油醚在流体静高压下的超声声速、衰减、密度和绝热压缩系数
6.
The numerical study of acoustical attenuation and velocityin the suspension of superfine particles
超细颗粒悬浊液中声衰减和声速的数值分析研究
7.
sound attenuation
消声器（噪声衰减装置）
8.
Acoustic velocity-frequency shift attenuation combined tomography detection technology
声波速度-频移衰减联合层析成像检测技术
9.
Effect of structure and composition on ultrasonic attenuationand velocity of polymer has been studied by pulse-echo method.
用脉冲回波法测定了甲基丙烯酸酯类共聚物的超声衰减与声速。
10.
Study of Influence of Attenuation and Non-linearity on Focused Sound Fields;
衰减和非线性效应对聚焦声场影响的研究
11.
Acoustics--Measurement of sound attenuation of hearing protectors--Subjective method
GB/T7584-1987声学护耳器声衰减的测量主观法
12.
STUDY OF ECHO THRESHOLD FOR DIFFERENT KINDS OF SOUND SIGNALS
不同类型声信号的衰减延迟与回声阈的研究
13.
STUDY OF THE ACOUSTIC NONLINEARITY PARAMETERS IN HIGH ATTENUATION BIOLOGICAL MEDIA
高声衰减生物媒质非线性声参量的研究
14.
Ultrasonic Density Meter Design Based on Ultrasonic Echo Attenuation Theory
基于超声波回波衰减理论的超声波浓度计设计
15.
Kraken Marine Acoustic Model and Its Numerical Experiment for Acoustic Propagation and Decay
Kraken海洋声学模型及其声传播与衰减的数值试验
16.
Analysis of Gearbox Vibration and Noise & Its Diagnosis by Spectrum Diagnostic Method;
减速机振动和噪声分析与谱诊断方法研究
17.
Analyses the characteristics of transmission, natural attenuation, regeneration and superposition of noise.
分析了空调系统噪声的传递、自然衰减、再生和叠加特性。
18.
The more the room is filled with absorbent the faster the sound decays.
房间的吸收率越高，声音就衰减得越快。