The distance between the acoustic-emission source and the receiving transducer, and the background noise level are primary factors in selecting a particular frequency band.
声发射源与接收讯号传感器间的距离以及环境噪声的电平是选择频带的主要依据。
A new method to design source-withdrawal weighting transducer is presented, which avoids the complexity when using traditional design methods.
提出了极性抽指加权叉指换能器设计的新方法，克服了传统设计方法的繁杂性。
Here the relative moving is between the RBC (red blood cell) in the blood and the source of the ultrasound transducer.
这里发生相对运动的是血中的红细胞和超声换能器的声源。
A brief expression of sound field induced by an annular transducer made of concave spherical piezoelectric ceramic is derived by introducing a negative sound source.
引入负声源，导出了凹球面状环形换能器声场的简洁表示式。
An energy source in the form of an ultrasonic transducer (6) has as a curved energy transmission surface (7).
超声换能器(6)形式的能量源具有弯曲的能量传递表面(7)。
We prepared broadband source of transducer system in fiber grating by analyzing characteristics of amplification spontaneous radiation spectrum and LD drive in erbium doped fiber.
通过对掺铒光纤放大自发辐射谱特性和LD驱动电路的分析，最终研制出用于光纤光栅传感系统的宽带光源。
The errors caused by light source, optical fiber, electro optic crystal and opto electric detector in optical fiber voltage transducer are presented.
研究了光纤电压传感器光路系统中光源、光纤、电光晶体和光电探测器对测量误差的影响。
The theory on the superficial function of impulse piezoelectric transducer of the said simulation source is discussed;
本文论述了作为这种模拟震源的脉冲压电换能器的表面换能原理；
In this paper, vibration characteristics of plate sound source driven by transducer commonly used in ultrasonic cleaning are analyzed with the finite element method.
为了解超声清洗等应用中常用超声换能器激励的板声源的振动特性，使用有限元方法对其进行了研究，并通过实验验证了仿真结果。
The calculation of the transfer function (transducer function)is considered first, and the references with the source programs are listed.
首先讨论了滤波器传输函数的逼近及机助设计情况，列出了有关带有程序清单的参考文献；
The prepared copper oxide nanometer array can be applied to display apparatus, electric light source, electric-to-optical transducer and thermoelectric converter.
制备出的氧化铜纳米线阵列可应用于显示器件、电光源、光电转换和热电转 换器件等。
The prepared copper oxide nanometer array can be applied to display apparatus, electric light source, electric-to-optical transducer and thermoelectric converter.
制备出的氧化铜纳米线阵列可应用于显示器件、电光源、光电转换和热电转 换器件等。
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