ultrasonic echo的例句大全

main ndt ce techniques such as the building dynamics, impact echo, ultrasonic echo, acoustic emission, radar, laser interference technique and infrared imaging are briefly discussed on their principle, application area, limitations and further research needed from the application point of view.

从应用的角度对NDT-CE中常用的振动分析、冲击回波法、超声脉冲回波法、声发射、雷达、激光干涉以及红外线成象等技术的原理、应用、局限性和发展前景作了简要介绍。

objective to find a reliable method to observe the character of amniotic fluid by quantitative analysis of ultrasonic echo intensity ( ei) on amniotic fluid in term pregnancy. to provide an objective index of amniotic fluid character to diagnose fetal distress in time.

目的对足月孕妇羊水进行超声回声强度（EI）定量分析，为临床及时诊断胎儿宫内窘迫提供客观的羊水性状指标。

The research technique route and tenet is to pick-up characteristic parameters by analyzing relevant ultrasonic echo signals and then found the relation between the structure configuration and evolvement process, till realize UNDE and UNDT of materials finally.

本研究的基本技术路线和宗旨是通过对超声回波信号进行相应的分析，提取模型的特征参数，并与材料的组织形态及其演变过程相关联，最终实现材料的超声无损表征与评价。

To enhance the signal to noise ratio ( SNR) of fundamental ultrasonic echo signals for ultrasonic nondestructive testing ( UNDT) and ultrasonic nondestructive evaluation ( UNDE), an improved technique to suppress structural noises of ultrasonic signals was presented.

为了提高超声无损检测（UNDT）与无损评价（UNDE）基础数据的信噪比（SNR），提出了一种基于神经网络模式识别理论的小波域超声信号消噪技术。

Ultrasonic echo-impulse digital thickness meter

超声回波脉冲数字式测厚仪

Due to these correcting devices, the signal of ultrasonic echo waves becomes relatively complicated.

由于引入了这些校正装置, 超声回波信号变得相对复杂.

Inside Scarfing Interferes with Ultrasonic Echo Signal

内毛刺形态对超声波回波信号的影响

Secondly, the technique of profile extraction based on duplicate wavelet transform is used to extract ultrasonic echo signal character owing to the trait of duplicate wavelet transform providing instantaneous phase information and the inherent relation between signal profile and object shape.

然后，根据复小波变换可以提供信号瞬时相位信息的特点，采用了复小波变换提取超声回波包络的方法，并提出一种根据包络线提取物体特征参数的技术；

This paper presents the sonic circulation and multi-pulse echo principle and designs roll profile ultrasonic measurement system based on the analysis of 3D surface measurement technology and roll profile measurement methods.

本文在分析了三维面型检测的发展现状及目前辊型的检测方法的基础上，提出了声循环多次脉冲反射测量原理，并以此为基础设计了上位机化的超声波辊型测量系统。

application of wavelet transform to the testing echo processing of ultrasonic flaw detector

小波变换在超声探伤仪检测回波处理中的应用

This paper introduces an ultrasonic ranging method based on analyzing the envelope of echo.

介绍了一种基于回波包络分析的高精度超声波测距方法.

Design and analysis of the lower electronic noise circuit with a ultrasonic pulse echo ranging system

低噪声回波测距系统的电路设计与系统分析

Experimental Study on Spatial Resolution of Ultrasonic Diagnostic Image Using Dynamic Focused Echo

动态聚焦回波超声诊断图像空间分辨力特性的实验研究

The used ultrasonic testing method is only limited to A-scope pulse-echo method.

所用的超声探伤方法仅限于八型显示脉冲反射法.

When large diameter sprial submerged arc welded pipes were inspected in ultrasonic test, different probe ( K, frequency etc.) will cause inspection echo.

大直径螺旋埋弧焊管使用超声波探伤时，由于探伤中所选用探头不同（K值、频率、前沿等），对探伤回波有一定的影响。

in ultrasonic pressure measuring outside pipe, echo signal is disturbed by noise.

超声测压过程中信号受到噪声的干扰, 使得回波信号质量较差.

Sound field characteristic and echo wave feature in ultrasonic nondestructive test of electron beam weld

电子束焊缝超声无损检测声场特性及回波特征

In the ultrasonic non-destructive testing, the precise position of the echo is very important information.

在超声无损检测中，回波的精确定位具有很重要的意义。

The principle of thermocouple thermometry was used for temperature measurement and the pulse-echo technique for ultrasonic velocity.

温度测量应用热电偶测温原理，声速测量采用脉冲回波技术。

Echo signal of ultrasonic detection takes information of interface bonding quality.

超声检测回波信号携带有界面粘接质量的信息，如何提取和利用是实现粘接质量定量识别的关键。