您要查找的是不是：
- The directed audio analogue system based on ultrasonic modulation is constructed, and the ultrasonic transducer array and the experiment equipment are designed. 构建了基于超声调制的模拟声频信号定向传播系统，设计了超声换能器阵列及其实验测试装置。
- ultrasonic transducer system 超声换能系统
- I was Yangzhou plant ultrasonic transducer plant, with 20 years of history. 我厂原为扬州超声换能器厂，具有20多年历史。
- METHODS:The ultrasonic transducer is located by using single chip computer and absolution position coder. 方法:应用单片计算机技术及绝对位置编码器对超声传感器进行定位。
- Alnuaimi, Nasser A. Modeling ultrasonic transducer in homogeneous and non-homogeneous media using DPSM method[Z]. 2004. 王莹.;高精度超声波测距仪的研究设计[D]
- On the assumption that there was a small solid sphere in the focusing area, the scattering field of concave sphere ultrasonic transducer was analyzed. 以凹球面超声换能器为研究对象，假设聚焦区存在一刚性球形微粒，对此时的散射场进行分析。
- This paper introduced the base quality of ultrasonic, ultrasonic transducer and the testing means of the general ultrasonic before the three chapters. 前三章我们分别介绍了超声波的基本性质、超声波换能器以及常规超声波的检测方法。
- Now relevant study is fewer.If needed, thick ultrasonic transducer is designed by both approximate calcula-tion and test adjustment. 目前,对厚电极换能器振子的研究较少,使用时一般采用近似计算与试验调整相结合的方法。
- The outline,mechanism,application,reception of laser ultrasonic,as well as the equipment and the design of our ultrasonic transducer,are introduced. 介绍激光超声的发展概况、物理机理、应用、接收以及实验的装置和所用的超声探头的设计;
- First, On the basis of the characteristic of surface wave location, the far field of wedge shape ultrasonic transducer can be explored. 本文根据定位的特点，对常用的楔形表面波探头的远场做了分析和计算。
- The result shows that in order to obtain the strong echo signal,a suitable selection of the ultrasonic transducer operating frequency is necessary. 由此表明,选择合适的声发射换能器,有助于提高液位检测回波信号的强度。
- Based on a number of tests, a transducer system with eight electrodesof 200mm long is designed to match the CSB riser and the ECT hardware made byUMIST of UK. 本文选择了综合性能较好的长度200mm的8电极传感器,用于测量悬浮床两个截面上的流动特性。
- Liu Ye, Wang Caitang, SuYanminetal.Birefringent effect of three phase optical current transducer system[J].Journal of Xi'an Jiaotong University, 2003, 34(2): 24-27. [7]刘晔;王采堂;苏彦民;等.;三相光学电流互感器的双折射效应研究[J]
- To eliminate ultrasonic crosstalk,the Chaotic Pulse Position Modulation(CPPM)is used to construct the short triggering sequence for each ultrasonic transducer. 为消除串扰,采用混沌脉冲位置调制构造每个超声换能器的短发射序列;
- Peng Taijiang, Chang Ying, Yang Zhigang et al.Experiment study on inductance match of damping ultrasonic transducer[J].Piezoelectrics &Acoustooptics, 2004, 26(1): 65-68. [5]彭太江;常颖;杨志刚;等.;超声减摩用压电换能器阻抗匹配的试验研究[J]
- Imported ultrasonic transducer has high efficiency in acoustic and mechanical interchange,The machine is all made by stainless steel and with beautiful outlook and durable in use. 采用进口不绣钢板及元器件，全不绣钢结构，外型美观耐用。
- In the experiment of measuring sound velocity, the sound velocity is generally measured by producing standing waves between a couple of ultrasonic transducer. 摘要在物理实验中常利用在1对换能器之间形成的驻波测量声速。
- The coordinative mechanism of prestress and longitudinal-torsional ultrasonic transducer's output is analyzed through the motion of longitudinal-torsional ultrasonic motor. 通过对纵扭复合型压电超声马达运行机理的研究，分析了预压力与纵扭复合型压电超声马达纵扭振子输出压电应力协同作用的机理。
- Adopting the designed ultrasonic transducer to detect water level,measuring principle and technical features of ultrasonic transducer used in mine were analyze. 设计采用超声波检测水位信息,分析矿用超声波传感器的测量原理与技术特点。
- The dynamic optimum design of high-frequency ultrasonic transducer was studied to improve thermosonic packaging efficiency and reduce packaging temperature. 为提高热超声封装效率、降低封装温度,研究了高频超声换能器的动力学优化设计。
