This paper introduces two methods of ultrasonic characterization of thin layers : longitudinal pulse-echo and Lamb waves .

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。

This paper expounds the necessity to recheck instrument anti detector system in ultrasonic testing and analyzes the causes to neglect the rechecking of the instrument and detector system .

阐述 超声波检测中对仪器和探头系统进行复核的必要性，分析了忽视仪器和探头系统复核的原因。

Objective To study the method for constructing an ultrasonic tele diagnosis and quality control system .

目的研究适用于 超声医学的远程诊断与质量控制系统的构建。

Ultrasonic wave has some functions of mechanical mass transfer heating and cavitation .

超声波具有机械传质、加热和空化作用。

Ultrasonic guided wave testing is widely used for the inspection of buried pipelines at present .

介绍了 超声导波检测埋地管道的特点和应用。

The system of the ultrasonic transducer is the key component of the bonding equipment in the thermosonic bonding system .

在热超声键合系统中， 超声换能系统是键合装备的核心部分。

He measured the speed at which ultrasonic waves travel along the bone .

他测出了 超声波穿过骨头的速度。

A kind of high frequency pulse electrical source at the need of electromagnetic ultrasonic experiments is presented .

针对电磁 超声实验对脉冲电源的需求，研制了一种高频脉冲电源。

Effect of ultrasonic treatment on the porosity of high carbon steel ingot was investigated .

研究了 超声处理对高碳钢铸锭内气孔的影响。

Automatic ultrasonic testing manual ultrasonic testing and radiographic testing techniques were used on the inspection of embedded defects .

采用全自动 超声波检测、手动超声波检测以及射线检测方法对预制缺陷进行了检测。

Ultrasonic wind velocity measurement with time-difference method and wind velocity measurement system based on ARM micro-controller were introduced .

介绍了 超声波时差法风速测量的基本原理，以及基于ARM微控制器的风速测量系统的实现方法。

Application of PLC and Transducer in Ultrasonic Automatic Flaw Detection System

PLC和变频器在 超声波自动探伤系统的应用

Introducing the distance ultrasonic altimeter system was proposed based on the overall composition of the system .

在介绍 超声远距测高系统功能的基础上，提出了系统的总体构成。

The image of drilling hole can be intuitively given by using ultrasonic detection .

利用 超声波对钻成孔进行检测，可以直观地给出钻孔的垂直度、孔径等参数。

The results may be helpful to the research and design of ultrasonic transformers .

这将对 超声变幅杆的研究和设计提供一定的理论依据。

The measurement and principle of ultrasonic measurement of sediment core are introduced .

介绍了沉积物柱状样 超声 透射法测量方法和原理。

Trifolium pratense isoflavone was extracted with the technique of ultrasonic wave .

对利用 超声波提取红三叶异黄酮的工艺进行了研究。

Orthogonal experiments were used to find the optimal extraction process of andrographolide by microwave and ultrasonic assisted extraction .

用正交法对微波和 超声波辅助提取穿心莲内酯的工艺条件进行优化。

Pitching vibration of ultrasonic bonding transducer can affect the bonding quality of IC .

以 超声键合换能系统为研究对象，分析了其俯仰振动对 超声键合质量的影响。

The ultrasonic destruction to acid brilliant scarlet GR dye wastewater was studied in this paper .

论文对铁炭内电解法及其改进方法 处理酸性 大红GR模拟染料废水进行了系统的研究。

In this paper we bring in the general program of ultrasonic testing of welding seam .

引入了焊缝 超声波探伤的一般程序。

The ultrasonic inspection technology of the pipeline axial crack was .

另外，对管道轴向裂纹的 超声检测技术也进行了初步研究。

Frequency tracking is an important characteristic of ultrasonic power .

频率跟踪是 超声波电源的一个重要特性。

This article introduces many kinds of ultrasonic transducers transducer focus and digital beam forming technology .

概述了各种 超声 医学成像换能器现状，以及换能器聚焦和数字波束成像技术。

Another focus was on how the operating parameters affect the ultrasonic wire bonding .

分析了各工作参数对 超声波线焊产生的影响。

A two-stage adaptive noise cancellation algorithm for ultrasonic nondestructive testing of oil pipeline is studied in this paper .

针对石油管道 缺陷 超声检测信号的噪声消除问题，研究了一种两级自适应噪声消除算法。

Ultrasonic phased array testing is a new technology with fine prospect in non-destructive testing .

超声相控阵探测技术是在工业无损检测领域具有良好应用前景的新技术。

Analysis of wavelet scalogram of blood flow ultrasonic Doppler signal .

小波尺度图分析法及其在 超声血流多普勒信号中的应用。

The influence of temperature curvature radius of lens and the thickness of oil on ultrasonic field is analyzed .

并分析了温度、透镜曲率半径和油层厚度对 探头声场的影响。