Echo Sounder is a kind of acoustic measuring depth equipment, which can measure depth with the time between transmitted wave and echo on condition in which the speed of ultrasonic is fixed.
回声测深仪是用来测量水深的一种声学测量设备，其以水中超声波的传播速度为确定条件，利用发射波与反射回波时间差来测量水深。
These so-called baryon acoustic oscillations offer another yardstick for measuring the expansion rate of the universe over time and putting limits on the value of dark energy.
这些被称为重子声学振荡的东西为测量随时间变化的宇宙的膨胀速度和对暗能量的值施加限制提供另一尺码。
The stress in ferromagnetic materials was studied by measuring the change of the amplitude of ultrasonic wave with electromagnetic acoustic transducers.
本文主要是对用电磁声换能器，通过测量超声波幅度变化来测量铁磁性材料内部应力的方法进行实验研究。
This thesis introduces the measuring principle, device composition and main functions of an intelligent acoustic impedance middle ear analyzer.
介绍了一种智能化声阻抗中耳功能分析仪的测试原理，仪器组成， 系统的主要功能等。
By directly measuring the acoustic velocity of each formation encountered in a well, the well logs and borehole seismic data can be correlated to surface seismic data more easily.
通过直接测量井中每一地层的声速度，测井记录和井中地震数据可以更容易地和地表地震数据联系起来。
This paper presents a quantificational evaluation to a specified high standard odeum via measuring on some main acoustic parameters.
通过对一个演出规格较高的音乐厅主要声学客观参数的测试，给出了该音乐厅定量的音质评价。
The principle and method of measuring the acoustic speed CVD diamond film with piezoelectric film detecting laser ultrasonic system are presented.
本文介绍了压电薄膜检测的激光超声系统对CVD金刚石膜声速测量的原理及方法。
This paper studies an acoustic method for measuring moisture contents in grain flowing.
研究了一种测量流动谷物含水率的声学方法。
List normal and special sources of acoustic or electromagnetic noise, serious vibration, sources of corrosion, and any other significant interfering parameter that might prevent successful measuring.
列出常见和特殊的声、电磁噪声来源，严重的振颤，腐蚀源以及所有有可能影响正常测量的干扰因素。
A standing wave tube measurement system is presented for measuring low frequency acoustic properties of underwater acoustic materials.
介绍一种用于水声材料低频声性能测量的驻波管测试系统。
Explicit expressions for the acoustic reflection coefficients from the interfaces are given and ultrasonic experiments for measuring the interface stiffness constants are described.
文章还给出了两相同固体中界面声反射系数的表达式，介绍了测量界面劲度常数的超声反射谱方法。
Magnetism measuring, Barkhausen noise and magnetic acoustic emission were often used for electromagnetic testing.
电磁检测方法主要有材料磁性量测、巴克好森噪声和磁声发射。
The phase mismatch errors are corrected by measuring the transfer function between two channels at the same acoustic field provided with B&KUA0914 inside in-tensity coupler.
本文利用UA0914声强耦合腔产生的同一声场条件，测量声强测量系统两通道之间的传递函数，进而对两通道间的相位不匹配误差进行修正。
The two-microphone method is investigated for the objective of in situ measuring the impedance of an acoustic liner in a duct.
对现场测量管道声衬声阻抗的双传声器法进行了研究。
As an objective diagnostic method, aural acoustic impedance measuring device holds a very important position in diagnosing ear diseases and hearing obstacles.
作为一种客观的诊断方法，耳声阻抗测量仪在临床耳疾和听力障碍诊断方面具有重要地位。
A method for measuring acoustic field of electromagnetic ultrasound is introduced.
介绍了一种测量电磁超声声场分布的方法。
Sector Cement Bond Tool(SBT) is an acoustic log tool for inspecting quality of the cement bond around the circumference of the casing tubing ans for measuring the pore paths.
扇区水泥胶结测井仪（SBT）是一种检测套管水泥胶结质量及探测孔穴孔道的声波测井仪器。
This paper presents an experiment for measuring the acoustic energy loss in the sand bed in water tank.
介绍了测量声波穿透沙层后能量损失的水池实验。
A simple method is devised for measuring the detection impedance in the acoustic impedance method of detection of unbonds and is based on an equivalent circuit of the detector.
本文在声阻法检测器等效线路的基础上，提供一种测量检测阻抗的简捷方法。
This paper presents the results obtained in the model experiments on the remote measuring of the acoustic impedance profile of a sea-bottom consisting of horizontal layers.
本文介绍一种声遥测海底平面层系声阻抗分布的模拟实验结果。
The use of Scanning Near field Acoustic Microscope (SNAM) in measuring the topography of precise surface is presented.
描述了一种用于检测超精表面形貌的扫描近场声显微镜（SNAM）。
The in situ acoustic measurement technique of marine sediments is the advanced technique in measuring the accurate acoustic properties.
海底沉积物声学性质原位测量技术是当前获得沉积物准确声学特性的前沿技术。
The in situ acoustic measurement technique of marine sediments is the advanced technique in measuring the accurate acoustic properties.
海底沉积物声学性质原位测量技术是当前获得沉积物准确声学特性的前沿技术。
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