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- pulse echo waves 脉冲回波
- Using the characteristics of pulse echo singal during the probe adjustment, a relation model between angle of incidence and time-domain eigenvalue of reflect wave signals was proposed. 分析了探头调整时脉冲回波信号的变化特点,在实验的基础上构建了声束入射角与表面波时域特征值间的关系模型。
- 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。
- Physical characteristics of terrestrial surface targets are retrieved by information contained in laser pulse echo signal with laser altimeter. 摘要激光测高仪依靠回波信号包含的信息来反演地面目标的物理特性，因此必须保持回波信号的保真度和高信噪比。
- The paper briefly investigates the ultrasonic testing of hydrogen-induced cracking (HIC) for in-service LPG tanks , and analyses types of echo waves of the cracking. 简要地探讨液化石油气贮罐母材中氢致分层类缺陷的超声波检测,对检测的几种超声波反射波形进行了分析,并给出了确定缺陷边界和深度范围的方法。
- 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。
- According to the principle of ultrasound detection, this thesis describes a high-speed sampling system for ultrasound emergent wave and echo wave. 摘要根据定量超声波检测原理，阐述了一种针对超声波发射信号和回波信号的高速采集系统。
- In the process of ultrasonic testing of multi-layered interface, it is difficult to distinguish interface-echo from ultrasonic pulse echo because of peculiar structure. 摘要超声检测在多界面粘接检测应用中，由于多界面结构的特殊性，造成回波信号不易分辨。
- The propagation velocity of ultrasound in patient's shinbone can be achieved by figuring out the time span between emergent wave and echo wave. 根据相关公式，只需计算出超声波发射信号和回波信号的时间差，即可获得定量超声波在受试者胫骨的皮质骨中传播速度。
- This system adopts ultrasonic pulse echo to measure distance,uses temperature sensor DS1624 to obtain ambient temperature which is used to compensate the measurement errors by soft programming. 该系统采用超声波脉冲回波测量方法测量摊铺料厚度,利用温度传感器DS1624测量环境温度,通过软件对温度引起的测量误差进行补偿;
- The Molde YB-GT-3 Automatic Can Vacuum Sorter based thereon, with a probe detecting echo waves cyclically proves to be of high sentivity and reliability, competent to check and sort the majority of various cans for low vacuums. 应用这个方法制成的YB-GT-3型罐头真空度自动分选机适合国情,灵敏可靠,能对大部分品种的罐头进行低真空度的自动分选。
- The Pulse Echo Tool(PET-AB) is introduced by Halliburton Logging Service Inc. of America at the early days of the ninties, which is the supported downhole tool of the DDL-V well logging system. AB脉冲回声测井仪是90年代初期由美国哈里伯顿公司引进的与DDL-V测井系统配套的井下仪器。
- Acoustic Short Pulse Echo Classification Technique 音响短脉冲回音分类技术
- Simulation of Landform's Echo Wave Based on DEM 基于DEM的雷达地杂波仿真
- The simple and intuitionistic formulas were given based on pulsed echo principle, in which the effect of dispersion and transverse sensitivity were considered. 基于脉冲回波原理，并考虑频散及横向效应等因素的影响，提出了减小频散影响的修正系数，并据此给出了简单、直观的管道裂纹检测公式；
- The storm heaved the sea into mountainous waves. 风暴在海面上掀起万丈波涛。
- Echo Waves and Their Stability in Linearly Coupled Oscillators 线性耦合振子中的回声波及其稳定性
- An unwanted false electronic pulse. 一种不希望有的假电子脉冲。
- Study of Long Distance Pulse Echo System with Ultrasonic Ware 大量程超声波回波测距系统的研究
- The huge waves battered the wrecked ship to pieces. 巨浪将那艘失事的船只冲击得支离破碎。
