Simulates the fluid field in the meter , and the results show that the meter has rational structure design and high measurement accuracy , and can meet the national standard 对表内的流场进行了数值计算，结果表明该基表结构合理，测量精度高，可以满足国家标准的要求。
According to the requirement of measurement accuracy and velocity , a novel twofold frequency laser ranging method based on phase ranging technology is proposed 根据本课题测距精度和测距速率的指标要求,针对现有激光测距方法的局限性,提出了双频测相相位式激光测距方法。
In this paper the principle of laser triangulation technique is described , the related formulae are derived , the factors wihich affect the measurements accuracy of triangulation technique are analysed 摘要阐明了激光三角测量的原理，推导了有关的公式，对影响测量精度的诸因素进行了分析。
By analyzing result of simulation , the intensity amplification effect of velocity pressure , which is induced by flow over dual bluff body , and the measurement accuracy of the dual bluff body flowmeter were projected 按照该参数设计出的样机，其测量精度1 ，重复度0 . 3 ，流量下限与单钝体涡街流量计相比下降约50 。
The system has obtained following effect : when the velocity of bar code is lower than 0 . 8m / s , its measurement accuracy reaches 0 . 1mm over 10cm range . therefore , it satisfied basic requirement of industry on - line measurement 本课题已达到的效果为：在条形码移动速度小于0 . 8m s时， 10cm的测量范围内，测量精度达到0 . 1mm ，达到了工业在线测量的基本要求。
Spurred by the demand of developing high performance aeroengine , the short duration turbine testing technique was improved greatly to achieve the measurement accuracy of long - duration turbine testing technique 近年来，在发展高性能航空发动机的需求带动下，短周期涡轮实验技术正在努力克服自身的薄弱环节，力争达到长周期涡轮实验技术所能达到的性能测试精度。
The research aim of the dissertation is to increase meter - wave radar ’ s angle ( azimuth ) measurement accuracy , make the theory exploration for expanding the application of the meter - wave radar from the early warning field to the guidance field 本论文的研究目的是提高米波雷达的角度(方位角)测量精度,为米波雷达的应用从远程警戒领域扩展到制导领域作理论探索。
In this paper , this leakage distortion is studied systematically , the cause of the distortion and it s relationship with the measurement accuracy are analyzed , the calculation equat ion and compensation of the error caused by this distortion are given 本文对此泄漏干扰进行了系统研究，分析了干扰产生的原因，干扰与测距精度的关系，给出了干扰误差的计算公式以及补偿方法。
In the calibrating process , complicated measurement is avoided and the calibration is fast and easy to carry out , which simplifies the calibrating procedure . the experiment results show that the space measurement accuracy is better than 0 . 15mm 这种参数分离法避免了标定过程中对空间点坐标的测量过程,不需要复杂精密的测量设备,计算速度快,试验表明传感器的精度达到0 . 15mm 。
But , due to the work principle of vortex flowmeter , vortex flowmeter is sensitive to all kind of extraneous disturbances . these disturbances reduce measurement accuracy and make locale measurement accuracy greatly lower than the accuracy that is calibrated in laboratory 但是，由于其工作原理的关系，它对外界的各种干扰非常敏感，使其现场测量精度大大低于实验室标定的精度。
