The deformation information is obtained from ultrasonic echo time delay.
软组织的形变信息是通过超声回波延迟时间得到的。
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。
A method about acquisition and processing of ultrasonic echo signal in liquid level measurement is introduced.
介绍了一种在液位测量中超声回波信号的采集与处理方法。
Using the time-gain compensation and peak time detecting technique, the arrival time of ultrasonic echo can be correctly detected.
采用了时间增益补偿技术和峰值时间检测技术，可正确检测超声波回波的到达时间。
The inventive diagnostic apparatus is adapted for simultaneous acquisition of ultrasonic echo signals and surface enhanced Raman spectroscopic signals.
本发明的诊断设备适于同时采集超声回波信号和表面增强拉曼光谱 信号。
By interaction between ultrasonic waves and elastic medium, it carries much information of material, which is received in the form of ultrasonic echo signals.
它是利用超声换能器的振动产生的超声波与弹性介质相互作用，从而携带了有关材料组织性能的信息，这种信息随同超声回波信号被接收到。
Methods 17 patients were examined by trans thoracic echocardiography(TTE), and observed the membrane shape ultrasonic echo, blood stream change in aortic canal.
方法采用经胸超声（TTE）检查17例夹层动脉瘤患者，观察主动脉管腔内有无膜样回声及管腔内血流情况。
By interaction between ultrasonic waves and elastic medium, it has carried much information of material, which are received in the form of ultrasonic echo signals.
它是利用超声换能器的振动产生的超声波与弹性介质相互作用，从而携带大量有关材料性能的信息，这种信息以超声回波信号的形式被接收到。
For the detection and processing of ultrasonic echo signal, the method proposed by this paper is able to improve the whole precision on a certain technical condition.
对于超声回波信号的检测与处理，本文提出的方法在一定的技术条件下可以实现回波信号整体检测精度的提高。
This paper attempts to preprocess ultrasonic signal by wavelet filtering based on the mathematical model of the ultrasonic echo, extracts weak echoes from signal with high noise background.
在超声反射回波的数学模型基础上，利用小波滤波方法对超声信号进行预处理，提取强噪声背景中的弱回波信号。
Based on studying the generating and receiving circuit of ultrasonics, this dissertation analyzes that the key to improve measuring accuracy is how to seek the starting time of ultrasonic echo signal.
在研究了超声波信号的产生、接收电路的基础上，分析了提高测量精度的关键在于如何精确地寻找到超声波回波信号的起点时刻。
Ultrasonic echo method is widely applied in non-destructive detection for its advantage of accurate defect locating, wide application, convenient operation and so on.
超声脉冲回波法以缺陷定位准确、适用范围广、操作方便等优点广泛应用于无损检测。
Ultrasonic echo method is widely applied in non-destructive detection for its advantage of accurate defect locating, wide application, and convenient operation and so on.
超声脉冲回波法以缺陷定位准确、适用范围广、操作方便等优点广泛应用于无损检测。
Ultrasonic echo method is widely applied in non-destructive detection for its advantage of accurate defect locating, wide application, and convenient operation and so on.
超声脉冲回波法以缺陷定位准确、适用范围广、操作方便等优点广泛应用于无损检测。
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