一种用于测量保存在高温高压下的水泥样品中的纵向声速的声换能器系统。
An acoustic transducer system for use in the measurement of longitudinal sound velocity in a cement sample that is maintained at high temperature and pressure.
目的研究凹球面超声换能器的声焦域在高声强和媒质有较大衰减情况下，其形状和几何位置的变化。
Objective the variations of the site and shape of focal region for a concave spherical ultrasound transducer in the case of high sound intensity and stronger attenuation were studied.
本文主要是对用电磁声换能器，通过测量超声波幅度变化来测量铁磁性材料内部应力的方法进行实验研究。
The stress in ferromagnetic materials was studied by measuring the change of the amplitude of ultrasonic wave with electromagnetic acoustic transducers.
互补序列在声表面波换能器编码和红外线光谱测定中也有应用。
The complementary series also find its applications in the acoustic surface, -wave transducer coding and the infrared spectrometry.
超声波传感器是实现声电转换的装置，所以，又称为超声波换能器。
Ultrasonic sensor is an instrument which transform sound into electricity, therefore, it is also called ultrasonic wave transducer.
本文提出了以声脉冲管测量辐射头为方形的一种阵元(纵向振动换能器)的输入力阻抗的方法。
In this paper, a method of measuring the input mechanical impedance of the array element (longitudinal vibrating transducer) with square radiation head by using impulse sound tube is proposed.
如果保持发射和接受换能器之间的距离不变，那么不需要测量距离就可以应用声弹性公式。
If we hold the distance unchanged between the emitting transducer and receiving transducer, the acousto-elasticity equation can be used without measuring the distance.
梳状换能器可看成若干叉指单元电端并联，声端首尾串联而成的网络，采用单向结构可降低采用这种结构的声表面波延迟线的损耗。
The comb transducer can be considered as the network of the parallel connection of some units of IDT electrical ports and the series connection of their acoustic ports.
在考虑晶体的压电性和各向异性基础上，从声的波动理论出发，对叉指换能器在液体-压电晶片界面上兰姆波的激发理论及其性质进行了研究。
To solve these problems, the properties of Lamb wave excited by interdigital transducer in the piezoelectric substrate covered by liquid were studied based on its piezoelectricity and anisotropy.
磁致伸缩换能器驱动热声制冷机是以声能作为动力源，利用热声效应获得制冷的装置。
The thermoacoustic refrigerator driven by the magnetostrictive transducer takes advantage of thermoacoustic effect to obtain refrigeration.
本文应用一致性时域有限差分法（FDTD）和近场远场变换计算散射声目标的反射声压强度，找出反射声压级与目标声中心到换能器间距离的关系。
Using the finite difference time-domain (FDTD) method and near field to far field transformation, pressure of the reflected sound from the scattering target is calculated.
并对PVDF换能器的声交叉耦合现象作了分析。
The interference phenomenon of PVDF transducer has been treated.
因此，本换能器的瞬态回应极佳，声电信号变换，无论从低频到高频；
Due to the extremely low mass of the ribbon, the transducer of this microphone boasts a premium transient response in converting acoustic energy into electronic signals.
一声频定向换能器，以定向发射超声波给接听者，其中该超声频段部分经空气自解调而还原为原音频信号。
Because the ultrasonic wave has the directivity, the audible audio frequency demodulated from the interior of the ultrasonic wave also has the directivity and forms a directional audible sound.
在水声方面，为了得到用较小的发射功率探测到更远得距离的目标，使发射能量集中在某些特定方向，人们对水声发射换能器及其基阵的声特性进行了很多研究。
There are a lot of research on the acoustic characteristics of the acoustic emission transducer and its array for the emission energy is concentrated in some specific direction.
我们在Y128基片上采用一般型和SPUDT型锥型换能器制作了相对带宽约15%的声表面波滤波器，一个换能器采用“块加权”，另一个换能器采用抽指加权。
Two kinds of SAWF using respectively usual and SPUDT tapered transducers with 15% fractional bandwidth are designed on Y128. One transducer is block weighted, and the other one withdrawal - weighted.
在声表面波传感器中，特殊叉指换能器构造了无源无线编码器和解码器，它能对众多传感器单元编码。
In the SAW sensor, special Inter-Digital transducer (IDT) on a piezoelectric substrate constructs passive SAW encoding and decoding element. The sensor elements are available to be embe...
在声表面波传感器中，特殊叉指换能器构造了无源无线编码器和解码器，它能对众多传感器单元编码。
In the SAW sensor, special Inter-Digital transducer (IDT) on a piezoelectric substrate constructs passive SAW encoding and decoding element. The sensor elements are available to be embe...
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