A thermoacoustic engine converts thermal energy into acoustic power by thermoacoustic effect without any mechanical moving parts.
热声发动机利用热声效应把热能转化为声功，系统中不存在任何机械运动部件。
The intrinsic relation between the pneumatic parameter, structural parameter and acoustic power level for centrifugal compressor is given.
给出了离心压缩机气动参数和结构参数与声功率级之间的内在关系。
This paper also studied the influence of acoustic power density, temperature and other parameters on the ultrasonic cleaning through experiment.
通过比对实验分析了驻波和清洗介质的性质对清洗效果的影响。
The experimental results have demonstrated that the pressure amplifier not only amplifies the pressure ratio, but also improves the acoustic power.
实验结果表明压力放大器不仅可以放大压力，还能提高负载入口声功和热机的效率。
The complex sound field distribution of the focused transducers was calculated by the coordinate transform method, and the acoustic power was measured.
该文应用坐标变换法对该聚焦换能器的复杂声场分布进行了数值计算，并测定了其声功率。
The second acquisition protocol USES an output acoustic power sufficient for causing destruction of the contrast agents during ultrasound image data acquisition (10).
第二采集协议采用在超声图像数据采集(10)期间足以导致造影剂破坏的输出声功率。
This paper introduces a kind of pulse tube regenerator, which can recover part of the lost acoustic power, and then analyzes it in two aspects:acoustic power recovery and phase angle adjustment.
本文介绍了一种带声功回收的脉管制冷机，从功回收和相位调节角度对它进行了分析。
The term "efficiency" refers to the ability of a speaker system to convert electrical energy (power from the amplifier) into acoustic output.
术语“效率”是指扬声器系统将电能（功放的推力）转化为声音输出的能力。
The properties of piezoelectric ceramics at high electric power and hydrostatic pressure are concerned for the application in underwater acoustic transducers.
特别对于水声换能器应用而言，压电陶瓷在大功率高静压力下的性能是人们十分关心的。
And also it explains the relations between the system of the motive power and sound producing organs, resonator and speech organs from acoustic point of view.
从声音物理学的角度阐述了身体的发声器官、共鸣器官、语言器官和动力系统的相互关系。
Based on acoustic emission, power monitoring and improved neural network technology and using cutting tool monitoring software, the normal or abnormal condition of cutting tools can be identified.
以声发射、功率监控和改进的神经网络技术，借助刀具监控软件，识别刀具切削工作的正常和失效状态。
Applying axial magnetic field on low power metal halide lamps, its effects on acoustic resonance were observed experimentally.
本文对纵向磁场作用下小功率金属卤化物灯电弧声共振现象进行了实验研究。
The research on the detection and location of partial discharges in power transformers using acoustic methods is presented.
介绍了国外应用超声波测量法判断变压器内部局部放电和确定局部放电源位置的研究工作。
In order to locate power cable fault fast and accurately, the acoustic propagation time measurement was developed to detect cable fault.
为了快速准确的找到电力电缆故障所发生的位置，研究了声磁传播时间差法测寻电力电缆故障点。
Mode conversion efficiency has been calculated as functions of acoustic frequency, interaction length, guiding layer thickness, and acoustic drive power density.
模式转换效率可化作声波频率、声光作用长度、波导厚度和声波功率密度的函数，并利用数值计算得出结果。
Influences of various types of damages on natural frequencies, vibration modes, acoustic radiation power and directivity of sound are studied.
考虑到不同损伤存在形式，计算分析了损伤对振动频率、模态以及声辐射特性的影响。
The technique of acoustic pyrometer in abroad has been used successfully to detect the temperature field of boiler in power plan, which brought about considerable economic benefits.
声学测温技术是近些年来兴起的一种新型测温技术，在国外已经被成功的应用于火电厂锅炉温度场的在线测量，并产生了可观的经济效益。
The relationship between the radiation impedance and the acoustic radiated power of the radiator with non-uniform vibrating velocity on the surface is formulated.
推导了表面振速分布不均匀的辐射器的辐射阻抗与辐射器辐射声功率之间的关系。
A unit used to express relative difference in power or intensity, usually between two acoustic or electric signals, equal to ten times the common logarithm of the ratio of the two levels.
分贝通常表示两个声音信号或电力信号在功率或强度方面的相对差别的单位，相当于两个水平的比率的常用对数的十倍。
The radiated power and acoustic pressure on the shell sur face are calculated, and the influence of the layer area on the shell "s radiation is discussed."
计算了圆柱壳表面的辐射声功率和辐射声压，讨论了阻尼覆盖层面积对声辐射的影响。
Experiment on acoustic pyrometry is done using the chirp signal, white noise and sine wave respectively in a 300MW boiler in one domestic power plant, through fire hole on furnace wall.
在国内某电厂的300MW机组锅炉上，利用炉墙上的观火孔，分别用扫频信号、白噪声信号和正弦信号进行了冷态下的声学测温试验。
Moreover, the drive power of an AOTF can be drastically reduced by utilizing acoustic re-sonance enhancement.
同时，该设计采用了声谐振结构。它可以大幅度地降低驱动源的功率。
Hartmann hydrodynamic acoustic generator can be used for acoustic treatment and is characterized by low cost, simple construction, durability and convenient power source.
哈特曼流体动力式声波发生器是一种声处理发声器，具有成本低廉、结构简单、坚固耐用以及动力源方便等特点。
It is demonstrated that the structure tailoring method by adding stiffeners is the lightest way to achieve the largest reduction in acoustic radiation power.
通过多个声辐射数值优化计算算例，对比分析了三种结构修改方式的优化结果，比较可以发现加强筋的优化效果最好，重量最轻。
The large cross-section acoustic horn can transmit more power and higher intensity sound, therefore research on this kind of acoustic horn becomes more and more emergent.
大截面变幅杆能够传输更大功率更高声强的振动能量，因此对这类变幅杆的研究成为迫切需要。
Hydrodynamic acoustic generators have long been in use for acoustic processing, due to their low cost, simple construction, durability and convenient power source.
流体动力式声波发生器是一种有着悠久历史的声处理发生器，具有成本低廉、结构简单、坚固耐用以及动力源方便等特点。
It can be used as a high-performance underwater acoustic target simulator, or as a low frequency broadband high power underwater acoustic source.
可用作水下目标声特征逼真模拟器(声靶)，也可作其它低频宽带大功率声源使用。
A new method based on Support Vector Data Description (SVDD) was presented to identify and locate line-spectrum power increase acoustic fault source of system.
本文以线谱增强类声学故障为研究对象，提出了一种基于支持向量数据描述(SVDD)的故障源识别定位方法。
A new method based on Support Vector Data Description (SVDD) was presented to identify and locate line-spectrum power increase acoustic fault source of system.
本文以线谱增强类声学故障为研究对象，提出了一种基于支持向量数据描述(SVDD)的故障源识别定位方法。
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