1) laser doppler interferometer
激光多普勒干涉仪
1.
Eventually,a laser doppler interferometer was adopted to measure the scan frequency and the vibration characteristic of PPOS.
介绍了一种新型二维压电光学扫描器的制备和工作原理,并利用有限元模型对二维压电光学扫描器作了振动模态的分析,最后采用激光多普勒干涉仪测量了二维压电光学扫描器的扫描频率和振动特性。
2) laser doppler interferometry
激光多普勒干涉技术
3) laser Doppler velocimeter
激光多普勒测速仪;激光多普勒速度计
4) laser Doppler anemometer
激光多普勒测速仪
1.
In a φ300 column,the flow fields of gas on rotating stream tray were investigated with DANTEC 55X laser doppler anemometer.
在φ３００ｍｍ塔内，实现了用二维激光多普勒测速仪对旋流板上气体速度场的测定，获得了不同高度剖面的切向、轴向及径向速度分布的数据，探明了板上气流场的基本特点；还采用气－固流模拟湿板操作，测定了模拟液滴的流场。
2.
The flow fields of gas and simulating droplet are investigated with the DANTEC 55X laser doppler anemometer on 300mm rotating stream tray (RST).
在直径300mm塔内,用激光多普勒测速仪对旋流塔板上的流场进行了实验研究,探明其主要特征,进一步证实了过去对不同用途板型的设计思想。
3.
The flow field in the tip region has been studied by laser Doppler anemometer (LDA) and flow visualization technique.
介绍了利用激光多普勒测速仪 ( LDA)和激光片光流场显示技术在一轴流风扇转子叶尖附近流场测量得到的结果。
5) laser doppler velocimeter
激光多普勒测速仪
1.
Aiming at the dynamic performance of frequency tracker designed specifically for laser Doppler velocimeter, the analysis was accomplished and some results of the experiments are presented.
针对激光多普勒测速仪常用信号处理设备———频率跟踪器 ,采用实验方法分析了其动态响应特性及影响因素 ,发现其动态响应参数并不能全面反映其在实际测试中的动态响应能力 ,实际测试中的动态响应能力明显低于通常的估计 。
2.
Based on the experimental data obtained from 3 D laser Doppler velocimeter to measure the flowfield of a coaxial rotor and a single rotor in hovering their axial, radial and circumferential velocity are comparared their characteristics and differences presented.
以三维激光多普勒测速仪测得的数据为基础，全面比较了共轴式双旋翼与单旋翼尾迹流场中轴向、径向和周向速度的特点与差异。
3.
In order to detect the hidden structures and the pattern of turbulence in fluid flow,the liquid velocity field was measured with 3D laser Doppler velocimeter(LDV) during the single bubble seriate rising process in non-Newtonian fluid,and wavelet method was adopted to analyze the time series of instantaneous velocity.
为了揭示流体流动中的隐含结构及湍流运动规律,利用三维激光多普勒测速仪对非牛顿流体中气泡上升过程液相速度场进行了测量,并借助小波方法对瞬时速度时间序列进行分析。
6) laser Doppler velocimetry
激光多普勒测速仪
1.
LDV(Laser Doppler Velocimetry) was used to measure the turbulence flow field in the cyclone tube.
利用二维激光多普勒测速仪 (LDV)对旋风管内湍流场进行了测量 ,得到了各湍流参数的分布规律 ,分析研究了旋风管的主要结构参数对流场分布的影响 ,为研究分离机理奠定了试验基
2.
Laser Doppler Velocimetry (LDV) was used to measure the flow field in the exit tube of a cyclone separator.
利用激光多普勒测速仪(LDV)对旋风分离器排气管内流场进行了全面系统的测量,发现气流的高速旋转、回流区的存在及湍流脉动是排气管内产生流动阻力损失的重要原因。
3.
The detailed 3D flow field in the straight plate diffuser was measured via laser Doppler velocimetry under different flow rates.
利用激光多普勒测速仪(LDV)测量系统测量了3个不同的工况下离心风机直板型叶片扩压器内部的三维速度场,并对叶片扩压器内部流场及其随流量变化的规律进行了分析。
补充资料：超声多普勒诊断仪
超声多普勒诊断仪
此为利用多普勒效应的原理对运动的脏器和血流进行探测的仪器。常用的超声多普勒诊断仪是由双片插头接受连续超声回声，转成电信号，经低频放大后作监听用；亦可外接示波器，供波型观察及摄影；接心电图记录仪，则可描记下信号的包络曲线。此外，还可用以探测胎动、胎盘杂音和脐带杂音。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条