The estimated velocity increased with the decrease of Angle between the ultrasonic beam and blood flow.
随着超声波束与血流角度的减小，检测到速度增加。
Ultrasonic flow meter fluid flow through the detection of ultrasonic beam (or ultrasonic pulse) effect to measure the flow meter.
超声流量计是通过检测流体流动对超声束（或超声脉冲）的作用以测量流量的仪表。
When material grain size is on the order of( ) wavelength of larger, excessive scattering of the ultrasonic beam may affect test result.
材料晶粒尺寸约大于多少波长时，超声波的散射会影响试验结果？
For an a mode biometric probe, ultrasonic beam orientation, measuring position and speed setting ensured the precision of the measurement.
对于A型生物测量探头，通过在声束定向、测量位置和声速设置等方面的设计思想，有效提高测量精度。
The major technical effect of the presence of the random phase screen in the ultrasonic beam path is the disturbing of the coherence of the wave traversing the screen.
配置在超声波束通路中的随机相位屏的主要技术作用中断通过该屏的声波的干涉。
Compared with traditional ultrasonic probe, ultrasonic phased array probe can realize transition, deflection and dynamic focusing of acoustic beam under electronic control.
与传统的超声波探头相比，超声相控阵探头可以实现电子控制下的声束平移、偏转与动态聚焦。
An inspection approach of the wing beam structure with screws connected is studied. The curve is obtained for inspection probability with ultrasonic detecting cracks.
文中针对飞机机翼大梁的螺接结构，研究其裂纹检测的方法，并完成一条超声波检测裂纹的检测概率曲线。
A novel audio beam loudspeaker which based on nonlinear propagation effects of ultrasonic in the air to generate audible sound with high directivity is presented.
提出了一种利用空气中超声波非线性传播效应制作的、可产生高指向性可听声的新型声束扬声器。
This article introduces many kinds of ultrasonic transducers, transducer focus, and digital beam forming technology.
概述了各种超声医学成像换能器现状，以及换能器聚焦和数字波束成像技术。
Digital beam forming (DBF) is special for phased array ultrasonic transducer compared to other ultrasonic nondestructive testing and is also the kernel technology of the whole signal-receiving system.
数字波束合成技术是相控阵超声检测相对于其它超声检测所特有的，也是整个信号接收处理系统的核心技术。
Ultrasonic has a good pointing, the attenuation in water is small, beam radio feature fine.
超声波具有指向性好，在水中衰减小，束射特性优良。
Ultrasonic phased array technique can help to achieve flexible, controllable synthesized ultrasound beam by exciting each element of an ultrasonic array transducer with independent phase delay.
超声相控阵技术通过对超声阵列换能器中各阵元进行相位控制，获得灵活可控的合成波束。
Based on the characteristic of the Wide-beam ultrasonic flowmeter, automatic gain control amplifier and the tracking band-pass filter are devised.
并根据宽波束超声波流量计的特点重点进行了自动增益控制放大器和跟踪带通滤波器的设计。
A novel audio beam loudspeaker is fabricated by utilizing the nonlinear propagation effects of ultrasonic in the air to generate audible high directivity sound.
一种新颖的声束扬声器是捏造的利用超声波在空气中的非线性传播效应，产生声音的高指向性的声音。
The theory and corresponding experiment of the intensity profile modification of a Gaussian laser beam by an ultrasonic standing wave (controlled by electricity) are reported and discussed.
本文报道和讨论了在超声驻波作用下实现激光高斯光束空间强度整形的原理与实验。
Ultrasonic phased array technology USES an array of ultrasonic transducer array element for each phase control, access to flexible and controllable synthesis of beam.
超声相控阵技术通过对超声阵列换能器中各阵元进行相位控制，获得灵活可控的合成波束。
Waterjet cut is one of the processing methods, it and the emergence of electron beam processing, ultrasonic machining method is called special processing method.
水射流加工就是其中的一种加工方法，它和新出现的电子束加工，超声波等加工方法被称为特种加工方法。
Using a new material, the transverse wave Angle beam probes in ultrasonic testing of welds for steel space grid structures with welded joints are made.
通过采用一种新材料，制造出了用于焊接球节点钢网架焊缝超声波探伤的超声波横波斜探头。
Theoretical and experimental results of the intensity profile modification of a Gaussian laser beam by 2-d ultrasonic standing waves are reported.
给出了在两维驻波声场作用下，激光高斯光束空间强度被整形的两维理论。
Theoretical and experimental results of the intensity profile modification of a Gaussian laser beam by 2-d ultrasonic standing waves are reported.
给出了在两维驻波声场作用下，激光高斯光束空间强度被整形的两维理论。
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