Method for assessing the overall performance characteristics of ultrasonic pulse echo testing instrument 评定超声脉冲回波检验仪综合性能特征的试验方法
Standard practice for measuring the change in length of fasteners using the ultrasonic pulse - echo technique 使用超声脉冲回波技术测量紧固件长度变化的标准操作规程
Method for assessing the electrical characteristics of ultrasonic testing instrument using pulse echo technique 采用脉冲回波技术评定超声检验仪电气特性的试验方法
Ultrasonics - real - time pulse - echo systems - guide for test procedures to determine performance specifications 超声波学.实时脉冲回波系统.测定性能规范的试验程序指南
This paper introduces two methods of ultrasonic characterization of thin layers : longitudinal pulse - echo and lamb waves 摘要介绍了两种常用的材料薄层超声表征方法纵波脉冲回波法和兰姆波法。
Standard practice for detection and evaluation of discontinuities by the immersed pulse - echo ultrasonic method using longitudinal waves 利用纵波的浸入式脉冲回波超声法探测与评价不连续性的标准实施规范
Based on the analysis of ultrasonic imaging theory , the paper puts forward a signal processing scheme in synthetic aperture focusing technique 本文首先介绍了超声成像的理论基础，分析了脉冲回波系统分辨率不高的原因及一般改进措施。
The application of longitudinal pulse - echo is relatively simple , which can provide information of the thin layers such as the depth , ultrasonic velocity , attenuation etc 纵波脉冲回波法简单易行，能够获得薄层厚度、声速和衰减等信息。
Scattering simulation for inhomogeneous layered canopy and random targets beneath canopies by using the mueller matrix solution of the pulse radiative transfer jin yaqiu , chen fei 极化脉冲回波mueller矩阵解数值模拟非均匀分层植被与其中随机目标的散射[金亚秋,陈扉]
Scattering simulation for inhomogeneous layered canopy and random targets beneath canopies by using the mueller matrix solution of the pulse radiative transfer ( jin yaqiu , chen fei ) 极化脉冲回波mueller矩阵解数值模拟非均匀分层植被与其中随机目标的散射[金亚秋,陈扉]
