• 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”是扬声器系统电能(功放推力)转化为声音输出能力

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  • 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,压电陶瓷大功率高静压力下性能人们十分关心的。

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  • The complex sound field distribution of the focused transducers was calculated by the coordinate transform method, and the acoustic power was measured.

    该文应用坐标变换聚焦换能器复杂声场分布进行数值计算,测定了功率。

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  • 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.

    声音物理学角度阐述了身体发声器官共鸣器官、语言器官动力系统的相互关系

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  • 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.

    发射功率监控改进神经网络技术借助刀具监控软件识别刀具切削工作正常失效状态

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  • 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功率金属卤化物灯电弧共振现象进行了实验研究。

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  • 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结构参数功率之间内在关系

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  • 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判断变压器内部局部放电确定局部放电源位置研究工作。

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  • 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。

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  • 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声波功率密度函数,并利用数值计算得出结果。

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  • Influences of various types of damages on natural frequencies, vibration modes, acoustic radiation power and directivity of sound are studied.

    考虑不同损伤存在形式,计算分析了损伤振动频率、态以及辐射特性的影响。

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  • A thermoacoustic engine converts thermal energy into acoustic power by thermoacoustic effect without any mechanical moving parts.

    发动机利用效应把热能转化为声功,系统中存在任何机械运动部件

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  • 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.

    声学技术是近些年兴起一种新型温技术,国外已经成功应用于火电厂锅炉温度的在线测量,产生可观经济效益

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  • 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.

    分贝通常表示声音信号电力信号功率强度方面相对差别单位相当于两个水平比率常用对数

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  • The second acquisition protocol USES an output acoustic power sufficient for causing destruction of the contrast agents during ultrasound image data acquisition (10).

    第二采集协议采用超声图像数据采集(10)期间足以导致造影剂破坏输出功率

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  • 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.

    国内电厂的300MW机组锅炉上,利用墙上的观分别扫频信号噪声信号正弦信号进行了冷态下的声学试验

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  • Moreover, the drive power of an AOTF can be drastically reduced by utilizing acoustic re-sonance enhancement.

    同时设计采用了谐振结构。它可以大幅度地降低驱动源的功率

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  • The relationship between the radiation impedance and the acoustic radiated power of the radiator with non-uniform vibrating velocity on the surface is formulated.

    推导了表面分布不均匀辐射辐射阻抗辐射器辐射功率之间关系

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  • 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一种处理发声器,具有成本低廉结构简单坚固耐用以及动力源方便等特点。

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  • 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

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  • 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.

    截面变幅能够传输大功率更高声振动能量,因此变幅杆的研究成为迫切需要

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  • 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一种有着悠久历史的处理发生器,具有成本低廉结构简单坚固耐用以及动力源方便等特点

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  • It can be used as a high-performance underwater acoustic target simulator, or as a low frequency broadband high power underwater acoustic source.

    可用水下目标特征逼真模拟器(声靶),可作其它低频宽带大功率声源使用。

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  • 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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  • The angular distributions of power and radiation enhancement factor strongly depend on the position of acoustic source relative to the unit-cell where the source is placed.

    我们数值地研究镶嵌在方形排列声子晶体中声源能量辐射角度分布。结果表明,能量辐射角度分布增强因子强烈地取决于相对于所处位置的对称性。

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  • 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,能提高负载入口功和热机的效率。

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  • 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."

    计算圆柱表面辐射功率辐射声压讨论了阻尼覆盖面积辐射影响

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  • 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."

    计算圆柱表面辐射功率辐射声压讨论了阻尼覆盖面积辐射影响

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