误差因素

And what's more, a new definition of error is introduced for evaluation of the computation: The effect of Courant number, grid resolution and ratio of cell on numerical dispersion is analyzed too.

详细地研究了Courant数、网格分辨率CPW和网格长度比率等因素对于数值色散误差的影响，为基于Taylor差分格式的FDTD算法的研究提供了有用的参考。

Based on the analyses of the anthropic factors resulting in test error of Engler viscometer , a method for improving the testing accuracy of Engler viscometer is studied in the article.

在分析了恩氏粘度计产生较大测试误差的人为因素的基础上，探求了提高恩氏粘度计测试准确度的措施。

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。

More over an auto-emendation arithmetic is brought forward and achieved to minish error.

同时，针对管道残留量、下料冲击和其他因素变化对配料精度的影响，作者提出了关断提前量的自校正算法，以消除误差，确保配料精度。

Temperature variation is a nonnegligible factor causing big biasing error. How to evaluate and compensate this error relates directly to the measurement accuracy. In the past, the time-sequence model was used to evaluate and compensate the temperature drift.

温度漂移是存在于IFOG系统中使得输出信号产生较大偏置误差的一种不可忽略因素，如何准确地预估漂移并有效地对其进行补偿直接关系到陀螺的测量精度。

It is theoretically demonstrated that the influences of terrain height and orographic heterogeneity are important on the flux of surface long wave radiation over a large scale grid area.

摘要从理论和数值试验两个方面证明地形的非均匀性对网格区地面长波辐射通量的计算有重要影响，海拔高度场的区域平均值及其变差系数是影响网格区地面长波辐射通量的主要因素，仅仅用地表均匀假定下的区域平均参量（如平均海拔高度和平均温度）所计算的网格区地表有效辐射通量值与其真实值之间存在着一定的误差。

Objective To study the factors affected the accuracy of the hard tissue changes for the orthognathic surgery.

目的 探讨牙颌面畸形患者行正颌外科手术术后硬组织位置变化与术前预测误差的影响因素。

The signal quality of moiré fringe from photoelectrical rotary encoder is the determining factor of interpolation errors.

光电轴角编码器的莫尔条纹信号质量是细分误差大小的决定性因素。

The random errors of main factors in flood regulation process are identified; and combining flood forecast, the randomnesses of main parameters such as initial reservoir level, inflow flood, outflow flood, etc., are analyzed. By using the first order second moment method and theoretic distribution, the random distributions of parameters are described then the routing process of a certain preflood limit water level is random, which can well reflect the random preflood influences in actual regulation.

对防洪调度过程各主要相关参数进行了随机误差识别，结合洪水预报对起始水位、人库洪水、泄流等主要参数的随机性进行分析，应用一次二阶矩法和相应的理论分布函数描述事件的随机分布，对应某一汛限水位的调洪过程不再是一确定过程，而是具有随机分布特性，反映了实际防洪调度中各随机因素的影响作用。

The specific contents are as follows:Firstly, the causes of energy balance method result has some errors is analyzed. Then energy balance method is improved from the following aspects: the wind power input, the conductor self-damping, the damper dissipated power and vibration solution of Stockbridge dampers-conductor coupling system. So that improved energy balance method can consider more influential factors to enhance accuracy.

本文对输电线的微风振动控制和次档距振荡进行了多方面的研究，主要包括能量平衡法的改进、防振锤-输电线耦合系统的振动求解、阻尼线的耗能计算理论、微风振动的室内模拟试验、分裂导线微风振动的精细计算理论、多分裂导线的最大次档距和阻尼间隔棒优化布置等几部分，具体如下：首先分析了微风振动传统计算方法能量平衡法计算误差较大的原因，分别从风能输入功率、输电线自阻尼功率、防振锤消耗功率、输电线-防振锤耦合体系的振动求解等方面，对能量平衡法进行了改进，使能量平衡法可以考虑更多的影响因素以提高求解精度。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐