查询词典 velocimeter

In order to decrease the measuring error of signal processing in laser Doppler velocimeter,frequency spectrum correction methods for laser Doppler signal were proposed.

在激光多普勒测速仪中，为了减小由信号处理算法带来的测量误差，提出运用频谱校正算法对多普勒信号的频谱进行校正，详细阐述了能量重心法、比值法和相位差法3种离散频谱校正算法的基本原理，运用这3种算法对理想正弦信号进行仿真，并运用比值法对信号施加不同频率和信噪比的噪音下的正弦信号和实测的多普勒信号进行仿真及实验研究。

Velocity of solid targets and velocity distribution of flowing fields can be measured by Laser Doppler Velocimeter technology based on Doppler Effect.

激光多普勒测速雷达技术利用激光多普勒效应测量固体目标的运动速度，或者流场速度分布。

To evaluate the atomizing properties of the nozzle, an experimental research is performed under different operating pressures by means of the Adaptive Phase/Doppler Velocimeter.

鉴于提高原油加热炉燃烧器的燃烧效率对油田节能降耗有着重要的经济意义，开发了新型内混式气动旋流雾化原油燃烧器喷嘴。

The results show that,all the three methods can effectively correct the frequency,the energy centrobaric correction has the lowest precision,and the ratio correction is the fastest and its precision is almost not affected by the change of signal-to-noise ratio.

标 签 信号处理激光多普勒测速仪离散频谱校正快速傅里叶变换 signal processing laser Doppler velocimeter discrete spectrum correction fast Fourier transform

Key words: ecological restoration; acoustic Doppler velocimeter; Pistia stratiotes; hydrodynamic behavior; planting mode; velocity distribution

关键 词：生态修复；超声波多普勒测速仪；大吀；水流特性；种植方式；流速分布

Difierent depth measurements were made using a point gauge while velocity measurements were taken using an acoustic doppler velocimeter over a grid defined throughout the junction region in physical model test.

现通过实体模型试验，利用三维超声波流速仪量测不同水力条件下连接井内的流速分布，提出了在连接井内设置品字型墙均流防涡装置的新技术。

Different depth measurements were made using a point gauge while velocity measurements were taken using an acoustic doppler velocimeter over a grid defined throughout the junction region in physical model test. The water diversion and vortex precaution device of "∴"-type diversion walls was developed.

现通过实体模型试验，利用三维超声波流速仪量测不同水力条件下连接井内的流速分布，提出了在连接井内设置品字型墙均流防涡装置的新技术。

Water depth measurements were made using a point gauge, the velocity and turbulence intensities measurements were taken using a three-component acoustic Doppler velocimeter over a grid defined throughout the junction region.

在入汇型河道三维水流结构试验过程中，获得了不同主支汇流比下的水面等值线图、u方向等值线图、u-v方向矢量场、v-w方向矢量场及水流脉动特征值。

In order to study local scouring field near the pier with sediment control dam ,the 3-D velocity field of the pier in monomer model is subtly measured by ADV velocimeter of Sontek.

采用Sontek公司声学多普勒测速仪对有拦沙坝防护的模型桥墩附近流场进行了精细测量，对桥墩冲刷坑内三维流速分布进行了分析，给出了冲刷坑内三维紊动特征量的分布，分析研究了有拦沙防护坝时桥墩局部冲刷的三个新特点，提出了拦沙坝的适用条件。

In order to study local scouring field near the pier with sediment control dam, the 3-D velocity field of the pier in monomer model is subtly measured by ADV velocimeter of Sontek. This paper analyses the velocity distribution in the scouring pool of pier and takes turbulent strength distribution in different direction. Three new characters for the local scours of piers with the sediment control dam are analyzed and the dam's applicability is brought forward.

采用Sontek公司声学多普勒测速仪对有拦沙坝防护的模型桥墩附近流场进行了精细测量，对桥墩冲刷坑内三维流速分布进行了分析，给出了冲刷坑内三维紊动特征量的分布，分析研究了有拦沙防护坝时桥墩局部冲刷的三个新特点，提出了拦沙坝的适用条件。

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。