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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。
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。
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。
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;
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。
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
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；
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
Equivalence Sampling Module for High-speed Pulse Echo Acquisition 用于高速脉冲回波采集等效采样模块
An unwanted false electronic pulse. 一种不希望有的假电子脉冲。
TWO INSTANCES ABOUT THE LIMITATION OF THE PULSE ECHO METHOD 低应变反射波法试桩局限性的两个实例
Her performance was cheered to the echo. 她的表演获得长时间的喝采。
Error Analysis of the Pulse Echo Tests on Coaxial cables 同轴管脉冲测试中的误差分析
The bird-song is the echo of the morning light back from the earth. 鸟的歌声是曙光从大地反响过去的回声。
His words aroused no echo in their hearts. 他的话未能在他们心中引起共鸣。
He knew the pulse of the nation. 他了解国民的心态。
The doctor took my temperature and my pulse. 医生量了量我的体温和脉搏。
The excitement quickened my pulse. 激动使我的心跳加快。