Receiving circuits detect the wave reflected by human tissue and output electric signal that has been demodulated.
回波处理电路用于检测由人体组织反射的超声信息，对转换成的电信号进行解调输出。
An accident of overvoltage reflected wave occurred in Chongqing Iron and Steel Company is presented. Generating reasons of overvoltage reflected wave and protective measures are discussed.
介绍了在重钢发生的过电压反射波的危害实例，探讨了过电压反射波的产生原因及预防措施。
Another familiar property of wave is their ability to be reflected when they meet an obstacle.
人们熟知的波的另一个性质是波在碰到障碍物时的反射能力。
According to the analysis of engineering example, the paper discussed the principle of reflected wave method and its application for detecting quality of low strain pile foundation.
通过工程实例分析，论述了反射波法低应变动载检测的原理和在桩基础工程现场检测中的应用。
This paper discusses the influence of construction and geology condition on the reflected waves, and put forwards the synthetic analysis method of reflected wave curves.
本文阐述了施工工艺及地质条件对测试曲线的影响，提出了反射波曲线综合分析的途径与方法。
For the abundant of noise in testing oil well depth with sound wave, it is difficult to locate the reflected sound wave.
在用声波测试油井油液面深时，反射声波受到大量杂波干扰，给接箍波和液面波的定位带来了极大的困难。
For an incident shock wave, the strength of reflected shock waves from the boundary of different materials are calculated theoretically.
从理论上计算了同一强度的入射冲击波在不同材料界面上产生的反射冲击波强度。
A method is presented, which makes it possible to calculate velocity and interface depth of the reflected wave in a vertically inhomogeneous medium.
本文提出了一种利用反射波走时曲线计算垂向非均匀介质速度和反射界面深度的方法。
The simulated variable density log map shows many important features of reflected waves, which are the base for identification of the reflected wave.
用模拟的变密度波形图显示了裂缝反射波的许多特点，这些特点是正确地识别和处理反射波的重要根据；
The influence factors and strength variation of the deep mixing pile are analyzed, and the application of reflected wave method in the deep mixing pile test is investigated.
对深层搅拌桩强度变化及影响因素进行了分析，并就反射波法在深层搅拌桩检测中的适用性进行探讨。
As a result a reflected wave is sent back into the water, but this is a rare faction wave.
结果，向水中送回一个返射波，但这是一种稀疏波。
The bent shock wave is reflected at the wall. As the flow speed changes, two kinds of shock reflection have been observed.
弯曲的激波与壁面进一步作用后发生反射，由于波前气流速度不同，这种反射存在规则反射和马赫反射两种类型；
To identify the signal of the weak reflected wave is a key problem to detect the thickness of the coal seam by using elastic wave.
弱反射波信号识别是声波法煤层厚度探测中的一个关键问题。
They are relatively immune to multipath cancellation effects, such as when a strong reflected wave arrives out of phase with the direct path signal, reducing the signal strength in the receiver.
相对而言，它们不受多路径消除效应的影响，例如当返回的强反射波与直接路径信号不同相位时，降低了接收机中的信号强度。
Water inlet&outlet and wave breaking chambers are arranged for relieving slab and breast wall to reduce the reflected wave height alongside the berth.
为减少码头前沿的反射波高，巧妙地在卸荷板和胸墙中设置进、出水孔和消浪室。
But, part of it is absorbed in the surface, thus, the reflected wave losses some of its energy.
但是一部分的声音会被反射面吸收，因此被反射的声音会失去一部分的能量。
Then, both the velocity and pressure have appeared swings in various degrees, which are the results of concurrent effects of pressure wave and reflected wave.
而后速度和压力图均出现了不同程度的波动，可知这是压力波和反射波共同作用的结果。
The system could measure certain distance on the premise that the speed of reflected wave in the air is fixed.
该系统以空气中超声波的传播速度为确定条件，利用反射超声波测量待测距离。
This paper reveals this law by engineering practice. Thence, it deepens the correlative understanding of the wave motion character of the reflected wave with the structure of pile body.
文章通过工程实践揭示了这一规律，从而深化了反射波波动特征与桩身结构特征的相关性认识。
We find that there appears a singular trajectory ( density on it being zero ) and a additional left-facing shock after the reflected wave reaches the explosion point.
我们发现，在反射波到达爆炸点后，这里出现了一条密度为零的奇轨线和另一条左向的激波。
The basic theory in designing and implementing the ultrasonic distance measuring system, is to record the time between the emission wave and the reflected wave by the object.
以测量超声波发射与反射时间差作为测距的基本原理，设计并实现可自动测距系统。
The shape and energy distribution of direct wave is mainly influenced by drift, while the energy distribution of reflected wave is influenced mainly by the interface between coal and rock.
巷道对各道直达波能量分布及波列形状有明显影响；煤岩分界面主要影响反射波能量分布。
The consistency of the frequency interpretation of reflected wave signal with the transient mechanic impedance method is illustrated with practical engineering examples.
说明了反射波信号的频率解释和瞬态机械阻抗法的一致性并均以工程实例加以佐证。
This paper discusses the electromagnetism properties of the near field chamber, with the relationship between reflected wave and direct wave analyzed.
讨论了近场暗室的电磁场特性，对暗室入射场、反射场的关系进行了分析，给出在工程中实用的近场暗室场特性的计算方法。
Most of electromagnetic wave are reflected by the surface of the metal bulk material, and the transmission can be neglected.
对于金属块体材料，电磁波的大部分能量在金属的几何表面被反射回去，其透射忽略不计。
The multi-coverage technique of reflected wave introduced inbthis paper can be used as reference.
文中介绍的反射波多次覆盖技术的数据处理技巧，值得借鉴。
Reflected wave signal is processed by double channels two-order low-pass active filtering in hardware, and indicator diagram signal is processed by digital filtering in software.
液面反射波信号主要在硬件方面采用双通道二阶有源低通滤波，功图信号则在软件方面采用数字滤波算法。
The dynamical stress produced by superposition or interference of reflected stress wave makes confining pressure reduce and change at low values.
地震动态应力使围压产生低值波动，一方面使围压减小、摩擦力减小；
It is introduced briefly that the principles of testing piles by low-strain reflected wave, and the factors influencing the quality of pile shaft as well as its applications in actual projects.
简要介绍了低应变反射波测桩的原理，以及影响检测桩身质量的影响因素，并介绍了在实际工程中的应用情况。
Abstract: At present, the reflected wave method is the most suitable and commonly used method in detecting the quality of rigid precast and cast-in-place piles.
文摘：反射波法是目前检测预制桩和灌注桩等刚性基桩质量最适合、最常用的方法。
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