The diesel engine's noise is measured by using the acoustic pressure method.
采用声压测量法对柴油机进行了整机噪声的测量,通过试验研究成功分离了发动机的燃烧噪声、机械噪声及进气噪声。
Then,the optimal geometric design of the structure is performed for the reduction of the acoustic pressure at interested positions and frequencies using the feasible direction method in iSIGHT optimization program.
在此基础上,以结构厚度为设计变量,保持结构重量相对不变并以设计变量的上、下限为约束,以设计域点在各频率响应声压平方和的平方根为目标函数,对其进行了优化设计研究。
By using the generalized finite element equation of cavity acoustic pressure with acoustic fluid-structural coupling,the numerical calculation for a practical example is conducted.
根据空腔声学的离散方程式，讨论了三维空腔的各种边界条件及其处理方法，运用流固耦合的空腔声压广义有限元方程，进行了实例计算，为空腔结构和振源分布的优化提供了依
Sound pressure measurement for noise source Identification in engine;
发动机噪声的声压测量与分析
The acoustic sources comprise an electronic sine wave generator or a loud speaker and a pneumatic diaphragm horn,by varying the frequency generated,sound pressure,air-to-cloth ratio and the filtering medium,the results have been achieved for reverse-air alone and reverse-air/sonic cleaning.
通过改变声波的频率、声压、气布比和滤袋材质，观察了单独反吹清灰和声波辅助反吹清灰的试验结果。
An acoustic vector sensor(AVS) is combined with a traditional omni directional sound pressure sensor and dipole directional particle velocity sensor, which is applied to underwater acoustic measurement and acoustic detection.
声矢量传感器由传统的无指向性声压传感器和偶极子指向性质点振速传感器组成,被应用于水声测量和探测领域,但作为水声测量设备它会受到安装载体衍射声场的影响,使其接收声场失真和指向性发生畸变。
pressure frequency response of microphone
传声器声压频率响应
equivalent input sound pressure of microphone
传声器等效输入声压
A-weighted equivalent continuous sound pressure leve
Ａ加权等效连续声压级
Acoustics--Determination of sound power levels of noise sources using sound pressure--Survey method using a reference sound source
GB/T16538-1996声学声压法测定噪声源声功率级使用标准声源简易法
Measurement of sound pressure level for sound signal appliances by seagoing vessel
GB/T12303-1990海船声号器具的声压级测量
The Peak Pressure Formula for the Acoustic Effect of the Energy Charged Particles
高能荷电粒子声效应的声压峰值公式
echoed the closely-packed ranks of the crowd.
黑压压的人层来了回声。
press or grind with a crunching noise.
发嘎吱嘎吱声地挤或压。
ultrasonic intracranial pressuregraph
超声颅内压力自计仪
e acoustic wave pulse compression filter
声表面脉冲压缩滤波器
Digital Speech and Image Compression ?
"数字声音,图像压缩技术"
sound surface wave pressure control oscillator
声表面波压控振荡器
low noise air screw compressor
低噪声螺杆空气压缩机
ultrasonic Doppler blood pressure transduce /sensor
超声多普勒血压传感器
asked she, reproachfully, but with a subdued tone.
她压着声音责问说。
surface acoustic wave pressure transducer
表面声波式压力传感器
e acoustic wave pressure sensor
声表面波式压力传感器
The thunder of the oppressed was being unleashed!
被压迫者的雷声发动了！