测量误差

In order to improve the measuring accuracy and efficiency, a high accuracy inspecting system for measuring the centroid and centroidal deviation of bullets based on three point method is designed. The working principle, relevant calculation formulae and the measuring equipment for measuring the centroid and centroidal deviation of bullets are presented, and the main factors affecting measuring precision are discussed. Then, a multiple measuring platform with automatic leveling and column structure autorotation of 90° is put forward.

为了提高其测量精度和效率，设计了基于三点法的高精度弹丸质偏心测量系统，介绍了测量原理、计算公式和测量设备，分析了测量误差产生的因素，提出了一种多测试平台和自动调平以及弹体自动旋转90°的设计思想。

The1Hz~lMHz input measured pulse signals of the digital frequency meter can be used for measuring frequency, period, pulse width and duty ratio,etc.The test results stably display 3 seven-segment numeric tubes, and the measuring ranges may be switched over automatically. The measuring error is equal to or less than 0.1％.

该数字频率计的lHz～1MHz输入被测脉冲信号具有频率测量、周期测量、脉宽测量和占空比测量等多种用途；其测试结果由3只七段数码管稳定显示，测试量程可自动切换、测量误差小于等于0.1％。

It is very important for estimating the size of photodetector aperture to calculate the Gauss-Laguerre correlation functions.

我们应用Bartelt和Freude等人l'，【51提出的光纤中模式分析测量的新方法—用计算全息产生的光学匹配滤波器对光纤中的模式进行分析测量，需要知道Gauss一Laguerre函数的卷积表达式，以此来估算测量时所有光电检测管的孔径大小，估计测量结果的精度，减小测量误差。

Results proved that the system could satisfactorily meet the tolerance limit of less than10%set by the design criteria.

结果： 系泊试验时报警仪的测量误差%；航行试验时的测量误差%；满足了设计指标0%的要求。

The dielectric loss and measuring method of capacitor voltage divider in CVT are discussed.

对CVT电容分压器的电容及介损的测量方法进行探讨，分析产生误差的原因，提出了减小测量误差的措施。

Abstract］ Objective To evaluate the detection rate, accuracy and factors influencing the measurement of axial length in cataractous eyes using the IOL Master version 5.0 with a composite signal analysis system.

在白内障超声乳化吸除联合人工晶状体植入术中，术前准确测量眼轴长度并计算植入的人工晶状体度数是非常关键的步骤，目前，术后的屈光误差主要来自于由术前眼轴测量误差引起的人工晶状体度数偏差[1-2]。

Aim at the question of measurement inaccurateness for the causes of disturbances and temperature excursion in the PLC multi-analog signals measure system,a kind of analog calibration method least square algorithm based is put forward.And then the detailed computation process of PLC analog signal's measure calibration is provided.

在由传感器、隔离器和PLC模拟量测量模块以及后端显示计算机组成的多路测量系统中，如果对测量参数不进行标定，则由于仪器本身的测量误差、多路测量通路之间的干扰等因素，后端测量计算机显示的测试数据往往是不准确的。

However, due to measurement, instrumental, computational, and even human errors, the measured process data always mix with noise ineluctably.

然而，由于测量误差、仪表精度、计算误差甚至是人为因素，过程测量数据通常不可避免地存在噪声。

The author identified and measured 5 landmarks of mandibula two times according to ten digital cephalometric radiographs selected randomly, then the mean error of measurements were determined.

随机选择10张数字化头颅侧位定位片，由作者对下颌骨上的5个测量指标进行先后两次定点和测量，然后对两次测量结果进行比较，检验重复测量误差的大小，是否对测量结果有影响。

A serial of precise standard resisters BZ-3 was used to adjust the instrument. The results showedthat the maximum error is less than 0.12%. The error is less than 0.05%in measuring the resistivity of several kinds ofenameled wire. For large piece of metal samples with low resistance, the instrument can have accurate results

通过对高精度标准电阻器组BZ-3的检测表明，全量程中的最大非线性误差为0.12％，对各种标号的漆包线的测量误差小于0.5％，对金属试样在腐蚀液体中的腐蚀情况能进行动态监测，对大试样粉末冶金样品的微小电阻也能进行精确的测量

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。