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压电器件
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  “压电器件”译为未确定词的双语例句
    ZnO thin film is used widely and effectively in the fields of surface acoustic wave devices,solar cell,gas sensors,varistors and so on because of its excellent piezoelectrical performance.
    ZnO薄膜以其优良的压电性能、透明导电性能等使其在太阳能电池、压电器件、表面声波器件、气敏元件等诸多领域得到广泛应用。
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    Furthermore, AlN has some outstanding physical properties that have attracted much interest. Its hardness, high thermal conductivity, resistance to high temperture and caustic chemicals, makes AlN an attractive material for electronic and optical devices.
    其中,AlN还具有高热导、高硬度以及良好的介电性质、声学性质和化学稳定性,可望在短波光发射和光探测、表面声学、压电器件等光电子和微电子器件方面得到广泛应用。
短句来源
    ZnO thin film is used widely and effectively in the fields of surface acoustic wave devices, solar cell, gas sensors, varistors and so on because of its excellent piezoelectrical, transparent and conductive performance.
    ZnO薄膜以其优良的压电性能、透明导电等性能在太阳能电池、压电器件、声表面波器件、气敏元件等诸多领域得到广泛应用。
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  piezoelectric devices
Various piezoelectric devices, which form an inseparable part in the progress of modern communication devices, television, radars, and several kinds of defence technology are being produced by the thousands in developed countries all over the world.
      
Analysis of the insulating, piezoelectric, and mechanical properties of the samples demonstrates that there is a group of solid solutions that are promising materials for high-temperature piezoelectric devices operating in the medium-frequency band.
      
Simulating the response of piezoelectric devices requires solving coupled electrical and mechanical partial differential equations.
      
A shape-memory-alloy actuator which memorizes the linear shape was used to realize a driving amount larger than those of electrostatic actuators and piezoelectric devices.
      
The films thus produced show a step forward in developing piezoelectric devices using more economic routes.
      
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Electromagnetic transducers have great advantages in automatic inspection and measurement of material characteristics at high temperatures.In particular,surface wave generation by electromagnetic transducer is an effective method.The physical structure and electroacoustic characteristics of surface waves(EMAT) are studies in depth.The impedance matching method is also described through an equivalent circuit model.Conclusions are drawn that EMAT is inductance load rather than capacitive.Therefore the transducer...

Electromagnetic transducers have great advantages in automatic inspection and measurement of material characteristics at high temperatures.In particular,surface wave generation by electromagnetic transducer is an effective method.The physical structure and electroacoustic characteristics of surface waves(EMAT) are studies in depth.The impedance matching method is also described through an equivalent circuit model.Conclusions are drawn that EMAT is inductance load rather than capacitive.Therefore the transducer design and optimization is greatly different from piezoelectric transducers.Efficiency is reduced with an increasing lift distance.In addition,impedance matching is important for enhancement of signal amplitude and restraint of harmonic waves.Matching with parallel capacitance can provide better conversion efficiency than with series capacitance.

电磁超声换能器的非接触、信号重复性好等特点使得其在高温自动检测、材料特性测量等领域有着广泛的应用前景。利用电磁超声技术激发表面波更是行之有效的方法,论文着重于理论分析,对表面波电磁声换能器的物理结构、电声学特性作了较为全面和深入的研究,并用等效电路模型探讨了阻抗匹配的方法。结果表明,电磁声换能器为感性负载,不同于压电器件的容性负载特性,因此对换能器的设计和优化也有着独自的特性;随着提离距离的增大,相应的换能效率也将急剧下降;阻抗匹配对于提高信号的输出强度,抑制谐波分量有着重要的作用,而采用电容并联匹配相比串联匹配,能够提供更高的转换效率。

 
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