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- ultrasonic echo method 超声波回声法
- The simulated annealing method is applied to the simulation of ultrasonic echo in this paper. 摘要本文应用模拟退火算法来改进超声回波模拟问题。
- It is proved by simulation and experiment that we can obtain the TDE value precisely by this method and simultaneously the effect on TDE because of the ultrasonic echo specialty is avoided. 仿真与实验研究表明，该方法在高信噪比下可以精确得到时延估计值，同时避免了超声回波信号的慢衰减高频振荡特性对时延估计带来的影响。
- Dynamic sonic vibration,pulse echo method,backscatter method,dual transducer methods and ultrasonic spectroscopy analysis were often used for ultrasonic testing. 超声检测方法主要有声振法、脉冲回波法、背散射法、双探头法和超声谱分析法。
- By interaction between ultrasonic waves and elastic medium, it has carried much information of material, which are received in the form of ultrasonic echo signals. 它是利用超声换能器的振动产生的超声波与弹性介质相互作用,从而携带大量有关材料性能的信息,这种信息以超声回波信号的形式被接收到。
- Pulse Echo Method (PEM) is a fast,economic and feasible method for Low-strain Dynamic Testing(LDT)of piles. 小应变反射波法是当前在工程桩基检测中应用的动测法之一。
- Methods 17 patients were examined by trans thoracic echocardiography(TTE),and observed the membrane shape ultrasonic echo、blood stream change in aortic canal. 方法采用经胸超声(TTE)检查17例夹层动脉瘤患者,观察主动脉管腔内有无膜样回声及管腔内血流情况。
- As the sample of eraser, ultrasonic echo signal is collected to further prove the relationship between the echo displacements and the changing of temperature in the experiment. 实验中利用橡皮作为样品,采集超声回波信号,进一步验证了回波信号与温度变化之间的关系。
- Pre polarizing and spin echo method are often used in NML tool, and the magnetic field used has been changed from primitive earth magnetic field to man made magnetic field. 核磁测井仪中多采用预极化方式或自旋回波法，所用的磁场已从最初的地磁场演变到现在所用的各种人工磁场，所用的测量方式要与采用的磁场设计相适应。
- Each of such bodies as tunnel lining, road way and road surface floorslab has only one inspection face, and the shock echo method has become a new technique for detecting thickness and defects. 摘要隧道衬砌、路道、路面楼板等只有一个检测面，冲击回波法成为新的厚度及缺陷检测方法。
- RESEARCH ON THE MEASUREmNT OF CRACK HEIGHT BY ULTRASONIC EDGE PEAK ECHO METHOD 超声端点反射法测量裂纹自身高度的数字处理方法
- Ultrasonic Echo Ranging Equipment 超声回波测距设备
- A bispectrum-based approach is applied to extract feature information of cementing oil well from ultrasonic echoes. 给出了基于双谱提取固井胶结特征信息的方法,并利用这种方法对实际信号进行了处理。
- This paper introduces the detecting echo methods for multi-beam sonar.It describes the disadvantage of BDI and WMT detecting methods.So Maximal Amplitude Deter-mining Echo method is presented. 摘要详细论述了多波束测深系统的幅度检测方法，指出了传统的BDI和WMT检测方法的缺点，提出了回波最大强度优先法。
- The method seems good but it needs to be tried out. 这个方法似乎不错，但需要试验一下。
- Statistic evaluation of ultrasonic echo feature value 超声回波特征值的统计学分析方法
- Application of Gaussian echo model in ultrasonic echo simulation and discussion of the iterative method 高斯回波模型在超声回波模拟中的应用及其迭代算法的讨论
- APPLICATION OF AMPLITUDE SPECTRUM IN THE ULTRASONIC INSPECTION OF ADHESIVE QUALITY IN MULTI-LAYERED STRUCTURES BY THE OBLIQUE ECHO METHOD 幅值谱在斜声束回波法多界面粘接质量检测中的应用
- The doctors gave him an ultrasonic brain scan. 医生给他做了脑部超声波扫描检查。
- Her performance was cheered to the echo. 她的表演获得长时间的喝采。
