笔者采用数字手段去测取超声波信号的频差，通过频差法可得出流体的平均速度，进而获得高含沙量流体的流量。
A digital signal processing way is established to obtain ultrasonic signal frequency shift in the test of high sand content fluid flow.
利用超声波技术并辅以电测法，对两组不同开口深度混凝土缺口梁的损伤断裂特性进行了试验研究。
It is conducted an experimental study on the damage and fracture characteristics of notched concrete beams with two groups of different depths by ultrasonic technology with strain gauge technique.
可靠性验证结果表明，选择合适的仪器设备及检测参数，采用正确的评定方法，超声波所测结果能较准确的反映零件的钎焊质量。
Reliability experiment was shown that braze welding quality could be known exactly by ultrasonic inspection when proper device, parameter and evaluation method were selected.
在工业生产中，利用超声波进行固体或液体中的距离测量十分普遍，尤其是小距离、微距离测量（如测厚、粗糙度、液位等）。
Application in ultrasonic rang in solid and liquid is in industry production very widespread, especially in micro-rang and short-rang, for example, thickness, roughness, liquid level.
采用数字手段测取了超声波信号的衰减系数，通过衰减系数可得出含沙量。
By using the digital means, the attenuation coefficient of the ultrasonic signal is measured, through which the sediment content can be obtained.
介绍了热线式、超声波式、硅压阻固态正交式三类测风传感器，并对这三类测风传感器的性能进行了比较。
This paper introduces hot wire, ultrasonic and silicon piezoresistive solid orthogonal wind sensors, and compares the performance of the three wind sensors.
介绍超声扫描成像技术在罐壁测厚中的应用。测厚系统采用多通道探头、PCI总线超声波界面卡和网络数据传输技术。
The wall thickness measurement system by ultrasonic scan imaging technology was described, in which multi-channel probe, pulser-receiver PCI card and network were applied successfully.
通过工程实例，阐述超声波测缺原理、检测方法及砂浆层粘结质量超声波检测技术的特点。
Also, the characters of using this technique to test the bond quality of mortar layer are described.
本文将具体介绍超声波测径的方法及应用。
The paper will introduce the method and application of ultrasonic caliper in details.
UF 91 1A超声波流量量测系统是根据超声波的有关原理对流量进行测量的装置。
UF911A is a flow measuring system based on ultrasonic principles. It can be used to measure flow anywhere.
本文所提出的超声测沙方法的原理，是根据超声波在含沙水流中传播时在悬沙上产生的反射波的数目来测量含沙量的大小。
In this paper, a new ultrasonic method of measuring the amount of sand contained in fluid or in sediment model has been introduced.
该零碎应用发射超声波与反射回波时间差来测量待测间隔。
The launch system USES ultrasonic echo and reflection of the time difference to measure the distance test.
利用三维超声波多普勒流速仪(adv)量测有植被时水槽不同测点位置的瞬时流场。
A 3d acoustic Doppler velocimeter (ADV) is used to measure the instantaneous flow fields at different measurement points in a flume covered with vegetation.
这样可以使被测环境处在安全范围内 ，同时可利用超声波传感器发射和接收车辆的信息 ，判断是否要开启或关闭仓库门 ，达到车辆进出的自动控制。
In this way, it will be ensured to keep the computer environment runing safely. Besides, when to open or close the door automatically can be controlled. This is a kind of technical…
这样可以使被测环境处在安全范围内 ，同时可利用超声波传感器发射和接收车辆的信息 ，判断是否要开启或关闭仓库门 ，达到车辆进出的自动控制。
In this way, it will be ensured to keep the computer environment runing safely. Besides, when to open or close the door automatically can be controlled. This is a kind of technical…
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