三叶虫在房屋周围飞来飞去，发出超声波信号，绘制出房间的地图，以备日后清洁时使用。
The Trilobite scuttles around homes emitting ultrasound signals to create maps of rooms, which are remembered for future cleaning.
超声波传感器发射和接收超声波信号。
Ultrasonic sensors are transmitting and receiving ultrasonic signals.
超声波信号穿过所有常见的金属和塑料管材。
The ultrasonic signal travels through all common metal and plastic pipe materials.
庞贝表明正确的超声波信号产生的各种声音都可以听见。
The correct ultrasound signal, Pompei suggests, can produce any kind of audible sound.
基本原理是声波信号在胶结存在时的衰减比胶结差时的要大。
The fundamental principle is that the acoustic signal will be more attenuated in the presence of cement than if the casing were uncemented.
数据采集器实现了管道泄漏声波信号的有效识别、采集和传输。
The data acquisition system fulfils the effective identification of the acoustic signal, picking and transportation.
介绍了激光超声的机理、光激超声波信号的检测方法及其应用。
Principle and testing method of laser generated ultrasonic and its applications are introduced.
本文应用混沌理论对燃煤流化床燃烧产生的声波信号进行了研究。
In this paper, the acoustic signals of FBC is studied with chaotic theory.
研究过程中设计的超声波轮式探头，发出超声波信号测量管道壁厚。
A roller ultrasonic probe was designed in the subject, and it sends ultrasonic wave to detect the pipe wall's thickness.
十分准确地刻画出声波信号的奇异性，并应用于交变语音信号处理中。
The strangeness of acoustic wave signals is precisely described and is applied to the processing of alternating speech signals.
声波信号时延的准确估计是实现强噪声环境下声学法高精度测温的关键。
Precisely estimated time delay of acoustic wave signal is very important to implementing the most accurately measurement of temperature using acoustical method in the strong noise environment.
将数字声波信号导入MATLAB软件进行处理，得到其功率谱密度图。
Then they were imported to MATLAB and calculated to obtain the power spectral density(PSD).
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.
通过发射超声波信号进入管壁，然后分析反射信号，这是能够确定金属的厚度。
By emitting ultrasound signals into the pipe walls and then analyzing the reflected signals, it's able to determine the thickness of the metal.
论文叙述了系统总体方案，偶极子阵列声波信号数据采集与处理模块的设计与实现。
This paper has discussed the scheme of the system, the design and realization of the data acquisition and processing module.
讨论了在声波信号处理中所使用的小波变换方法，以及用这种方法所实现的滤波功能。
It introduces the method of wavelet transformation applied in the acoustic wave signal processing and how to use this method to implement the function of filtering the waves.
毕竟，我们的祖先是非言语类猿，而我们的语言就可能是从这些声波信号演变过来的。
After all, our ancestors were non-speaking apes and our language presumably evolved from such acoustic signals.
本文设计了专门用于检测次声武器各项性能的次声波信号采集系统和传输特性分析系统。
In this paper, the signal collection system and analytic system of transmission characteristic of infrasound are designed, which are used for testing the performance of infrasound.
当舱口盖被关闭时，产生的超声波信号的发射器被放置在货舱(空或装载货物)里发射超声波。
After the hatch covers are closed, a transmitter generating an ultrasonic signal is placed in the cargo hold (empty or loaded with cargo) emitting ultrasonic waves.
该传感器发出的声波信号，并决定通过测量之间的声波传输和时间的距离时，声波反射的对象。
The transducer sends a sound wave signal and determines the distance by measuring the time between the transmission of the sound wave and when the sound wave is reflected off an object.
本文建立了沿不同方向的多个超声波信号作用下的多维声光衍射的耦合波方程，并求出相应的解。
A set of coupled wave equations for multiple dimensional acoustooptic diffraction with multiple acoustic waves along different directions is put forward and its solutions are derived.
自动增益控制算法中的峰值检测算法使用信号能量的方法可以快速有效的测量得到超声波信号的峰值。
By using the peak detection algorithm in automatic gain control algorithm, we make use of the signal energy to measure the peak value of ultrasonic signal quickly and efficiently.
小波变换同时有在时间域和频率域对信号进行局部化的特点，使其在声波信号处理中有着广泛的应用前景。
The wavelet transform is of good localization property in the domain of time and frequency, which provides a comprehensive application in processing acoustic wave.
实验结果表明研制的这种光纤声波传感器测量变压器油中传播的声波信号具有比较高的灵敏度和较宽的带宽。
Test results indicate that the developed fiber optic acoustic sensors are capable of detecting the acoustic signals propagating in transformer oil with high sensitivity and wide bandwidth.
使声波信号沿着发射器和接收器之间的套管井壁传播时的幅度衰减确定套管外水泥胶结质量的声波测井方法。
A log that USES the variations in amplitude of an acoustic signal traveling down the casing wall between a transmitter and receiver to determine the quality of cement bond on the exterior casing wall.
本文从超声波信号模型出发，对超声电视测井井下仪器的接收机、发射机的指标和方位检测精度进行了详细分析。
With a model for the ultrasonic signal, the requirement on receiver and transmitter performance and the detection accuracy of the bearings of an ultrasonic borehole televiewer are discussed.
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.
本文采用声学检测的方法，对水平管和起伏管在单相气体和两相流体的情况分别进行了测试，得到了相应的声波信号。
The paper used acoustic detection method; tested the horizontal pipeline and undulating pipeline in single-phase and two-phase flow situations, and gained the corresponding acoustic signals.
对超声波信号检测采用本文提出的这种软硬件结合的预处理措施，结果显示能达到满足的抑制各种噪声和干扰的效果。
This combinational way of software and hardware to pre-process the receiving ultrasonic signals demonstrates the capacity to suppress noise and interferences efficiently.
对超声波信号检测采用本文提出的这种软硬件结合的预处理措施，结果显示能达到满足的抑制各种噪声和干扰的效果。
This combinational way of software and hardware to pre-process the receiving ultrasonic signals demonstrates the capacity to suppress noise and interferences efficiently.
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