查询词典 measurement

Responsible for anechoic chamber designs for EMC and antenna test and measurement requirements.

负责EMC、天线测试与测量电波暗室设计。

Anechoic chamber is the primary test site of electromagnetic radiation measurement, also the important facility for antenna and wave propagation research.

电波暗室是辐射电磁场的主要测量场地，也是研究天线与电波传播特性的重要试验设施。

According to the theory of electromagnetic field and the theory of error a nalysis,the far field condition for antenna test is discussed,the influence of limited test distance on antenna far field measurement in a microwave anechoic chamber is analysed, and the error model is established.

利用电磁场和误差分析理论，在阐述天线远场测量条件的基础上，分析了微波暗室有限测试距离对天线远场测量的影响，建立了误差模型，并结合实例说明了微波暗室有限测试距离对天线场强测量、增益测量的影响。

It is possible to buy a professional, well calibrated anemometer with a measurement error around 1% for about 700-900 USD.

误差只有1%左右，校准较好的专业用测风仪价格大概在700美元-900美元左右。

The outstanding advantage of the method is that the position measurement device undepends completely on anemometry system.

这种方法的一个突出优点是测点定位装置完全独立于激光测速系统，因而对任何激光多普勒测速仪都是适用的。

Keywords: particle measurement; signal processing; phase Dopplor anemometry PDA

中文关键词：粒子测量；信号处理；激光相位多普勒

Fourthly, it is also expounded the experimental priniciples and methods of testing the flow field in the rotating wheel of torque converter with two-dimensional Laser Dopple Anemometry and made the measurement of the flow field of YB355 impeller and turbine in this paper.

文中还阐述了用二维激光多普勒测速仪，测量变矩器旋转叶轮内部流场的试验原理和试验方法，并对YB355变矩器泵轮和涡轮内部流场进行了测试。

The experimental setup for the turbulent jets in crossflow is designed, and the hot wire anemometry IFA 300 is used to measure the velocity field and the turbulent kinetic energy, and the computational result matches experimental measurement reasonably well. The experimental result is very important in the analysis of the flow field, deduction of the equation of the jet trajectory, check of the turbulence model and validation of the numerical method.

首先，建立了用于测量横向紊动射流的实验台，并利用IFA 300型热膜风速仪系统测量了多种工况下的流场，并将速度、湍动能结果与数值计算结果进行了比较，实验结果与数值模拟结果吻合较好，从而为分析流场特性、确定射流轨迹、比较湍流模型以及验证数值计算方法提供了依据。

Acousto-optic scanning laser Doppler anemometry , in which the acousto-optic deflectors are used to controll the position of the LDA measurement volume, is a newly developed technique for measuring the spatial distributions and temporal properties of flow field.

通过对空间速度梯度和空间速度分布测量技术的分析与比较，作者认为使LDA测量点位置移动的激光扫描测速技术是诊断空间速度分布的好办法，并针对机。。。

The structure and properties of the copolymers have been investigated by 1H-NMR, DSC and measurement of surface contact angle.

采用1H-NMR、DSC和表面接触角等方法研究了梳形共聚物的结构与性能。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。