换能器

S1.1.5Instrument calibration as described herein shall be accomplished with the reference standard being rotated and fed past the transducer at the same approximate rate at which the tubing under test will be tested.

原译：如这里所述的，仪器的标定应用参考标准完成之，将其回转，并以管子在检验时要予以的大致相似速度通过换能器。

Electro-acoustic equipment categories: electro-acoustic device test system, characteristics of piezoelectric transducer tester, test sensitivity sorting device, sound level meter, precision signal source Sweep, Sweep audio device, the standard sound source, standard test microphone, IEC318 Simulation of the ears, mouth simulation, speakers polarity tester, telephone analyzers, such as electro-acoustic type of testing equipment.

电声器件测试系统、压电换能器特性测试仪、灵敏度测试分选仪、声级计、精密扫频信号源、音频扫频仪、标准声源、标准测试话筒、IEC318仿真耳、仿真嘴、喇叭极性测试仪、电话分析仪等电声类测试仪。

We get the relations of system frequency, load resistance and electromechanical coupling coefficient to the conversion efficiency of piezoelectric transducer.

经过分析讨论后，得到了压电发电系统的工作频率、负载电阻和机电耦合系数与压电换能器能量转换效率的关系。

Two works guaranteed the fulfilment of this studies,(1)developing compressional - and shear - waves transducers with broadband which is key part of the system in the physics model experiment, and study of the special property and using skills of the transducers , groping the relative experience to develop transverse wave measurment and observation at laboratory.(2) establishing a suit of comprehensive testing system to observe the elastic wavefield in anisotropy media .

首先通过研制物理模型实验技术中的关键器件纵横波宽频带换能器，及对其性能和使用技巧的研究，积累实验室开展各向异性介质的测试经验，建立了一套较完整观测各向异性介质弹性波场的测试系统。

Dynamic holography allows determination of the change in the dimensions and index of refraction of the transducer, and thus the change in the concentration of the vapor to be tested.

动态全息术能够测定该换能器的尺寸及折射率的变化，因而能够测定待测蒸汽的浓度变化。

The possibility for damage detection in relatively thick structures with PZT transducers based on guided wave approach was discussed.

探讨了利用PZT换能器在较厚结构中进行基于弹性导波方法的损伤识别的可能性。

Optimum design of focused transducers is studied, and the selection of thickness of lens and materials is discussed.

研究了聚焦换能器的优化设计，对透镜厚度及材料的选取进行了分析。

Because of their diverse applications, there are many types of ultrasonic transducers.

由于超声技术的应用范围很广，且超声新技术层出不穷，因而与此对应的超声换能器的种类也很多。

The phenomenon of three different frequency transducers is researched through the experiment.

通过实验对3种不同频率的压电超声换能器的空化现象进行了研究。

The characteristics of the piezoquartz transducers are important factors to improve performance of the acoustic logging tool .

压电晶体换能器性能是影响声波测井仪器质量的重要因素之一。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。