查询词典 velocimeter

In order to design a high performance laser Doppler velocimeter, the relationship between the signal intensity of laser Doppler and the diameter of spot was analyzed using the speckle theory, and the calculation formulas of the Doppler current was given based on functional theory. The polarization characteristic of scattered light and its intensity distribution were investigated.

为了设计高性能的激光多普勒测速仪，运用散斑理论详细分析了激光多普勒信号的强度与散射光斑大小的关系，结合泛函理论给出了计算多普勒电流的散斑表达式，并通过实验的方法研究了回波信号的偏振特性及其强度分布。

In addition, an experimental study for a airfoil by using a laser-two-focus velocimeter (L2F) and its numerical calculation are also described.

此外，本文还利用双焦点激光测速仪（L2F）对单个叶型的绕流进行了实验研究，并进行了数值分析和比较。

By use of 3-D ultrasonic doppler velocimeter,the turbulence characteristics of water flow in the spur dike head and backflow region are observed and analyzed systematically.

利用三维超声学多普勒流速仪对丁坝坝头附近水流和回流区水流的紊动特性进行了系统的观测和分析，得到了丁坝坝头和回流区的水流特性及紊动动能的分布规律。

Moreover, laser velocimeter not only has the advantage of larger effective working area, but also has the capability to use the technology of pointing emission to keep tracking of a certain object in corwded heavy traffic with higher precision.

激光测速仪不仅具有更大的有效工作范围，而且它利用点射技术，能够在拥挤的车流之中固定跟踪某一个目标，精确率更高。

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。

By means of Laser Doppler Velocimeter and on the basis of the theory of fluid mechanics, the effects of the structural and operating parameters of a double-cone type hydrocyclone on the tangent velocity field are investigated.

利用多普勒激光测速仪，结合流体力学理论，试验分析了双锥体水力旋流器结构和操作参数对切向速度场的影响。

Firstly, the optical structure of the measurement region of the dual beam laser Doppler velocimeter is derived exactly based upon the wave function of Gaussian beam.

首先从高斯光束的波动方程出发，推导出双光束激光多普勒测速仪相干区域的光学结构及随被测体一起运动的微粒所散射的光波函数。

The research of pulse semiconductor laser velocimeter.

周晶。 脉冲式半导体激光测速仪的研究。

A new three-dimensional laser Doppler velocimeter (3D LDV) by only using frequency shift separation method has been developed.

研究一种采用频移分离方法的新型三维激光多普勒测速仪(3DLDV)。

A Three- dimensional-acoustic Doppler velocimeter is used to measure the velocity components of the flow field in all three coordinate directions for different discharge and measurement site.

利用三维超声波多普勒流速仪量测不同位置、不同流量下的流场，分析了测点位置和水深与植被高度比对时均流速、紊动强度及雷诺应力垂线分布的影响。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。