查询词典 systematic error

The sources of leading error were analyzed,the error generating process was described,and the vector equation of the leading error was built up.

主要分析了战斗机引导误差来源，对引导误差的产生过程进行了矢量描述，推导出引导误差矢量方程。

Aiming at T-base diamond lathe, author use both on-line and off-line to measure the error vector of lathe workspace, and acquire good network train samples, then build two-dimensional error compensation model of lathe workspace with BP neural network and fuzzy neural network, at last build contour error compensation control system.

在分析国内外数控机床伺服闭环系统的发展现状及局限性的基础上，利用原数控系统和所研制的二维压电陶瓷微动刀架，研制了独立于原数控系统的超精密闭环控制系统。

The error includes two sides, one is the calculation error about Wheatstone bridge circuit, and another is the effect of the sharp pulse producing when test current is loaded on the sample. In order to eliminate or decrease error, some measures are employed in the test program.

2进行了无损性验证试验，结果说明经过瞬态脉冲试验的产品的感度性能与未经过瞬态脉冲试验的产品的感度性能相比，没有显著性差异。

Aiming at researching on the theory of the shaft-kind parts form error evaluation and its application, on the basis of the analysis for the geometric model of the roundness error and cylindricity error, the linear programming models of the enclosure evaluation were proposed. According to the features of the proposed models, the solution of the optimization algorithms of linear planning was discussed to obtain accurate evaluation results.

为了对轴类零件形状误差评定理论及应用进行研究，在分析轴类零件的圆度、圆柱度误差评定几何模型的基础上，建立了包容拟合评定的规划数学模型，并针对模型的特点，探讨了使用线形规划的单纯形优化算法进行规划模型的求解，从而获得精确的形状误差评定结果。

Four methods for evaluating circularity error. least-squares method for evaluating cylindricity error. 3.Using language of VC++, a software of form error evaluating is developed. Module structure is adopt in this software and every element has one module.

用VC++开发了形状误差的评定软件，软件采用功能模块结构，每种元素均设计为一个独立的模块，为使评定结果更加直观，采用OpenGL对处理的结果进行了可视化处理，结果图形可以随意转动和缩放，以方便观察。

Its precision mainly lies on the Abbe Error caused by the offset between the centerline and the mobile line of the capacitive-gate ruler, the heeling error of the guide mechanism, and the error caused by the dilatometric change of parts resulted from the temperature change.

主要在于它的精度造成的阿贝误差之间的中心线与电容栅尺移动线偏移，指南的机制倾斜误差，以及零件的热膨胀变化引起的温度变化导致的错误。

Main factors to bring ultrasonic level measurement error were studied and emendable error model of ultrasonic level measurement instrument was established according to the error characteristics in the process of measuring.

本论文运用化学计量学中的回归分析法、最优化方法、模式识别方法和计算机技术，对原油生产集输过程的实时盘库系统（目前国内尚未解决的难题）和气相色谱分析进行研究，完成了以下研究工作。

By measuring the point features to obtain the orientation of the bone and by adding compesated cutting path, results shows that the angle error between the connection of Femoral and Tebial mechanical axis is 2.44 degree and the angle error is 0.75 degree in epicondylar axis, which met the error in practical requirement for total knee replacement surgery.

在本论文中已完成实物设计制作，最后以Saw bone作为切割实验，利用量测点取特徵点得其骨头方位并加入补偿值调整切割路径，其结果股骨和胫骨之连线与机械轴误差为2.44°、epicondylar axis角度误差为0.75°，以目前实验误差已可符合实际膝关节手术之要求。

In the intersatellite coherent optical communication, the vibration of a satellite will lead to a pointing error of transmitting and receiving antennas, which will decrease the signal-to-noise ratio and increase the bit error rate. In this paper, the Rayleigh distribution is taken as the pointing error model caused by satellite vibration, and PSK homodyne communication scheme is used as an example to analyze the influence of the satellite vibration on the system instantaneous BER and average BER. The simulation calculation result of BER is given.

针对星间相干激光通信中卫星平台的振动造成发射天线和接收天线的瞄准角误差，使系统信号信噪比下降，误码率增加，该文以瑞利分布作为振动造成的瞄准角误差模型，结合高斯本振光和艾里信号光外差检测模型，以PSK零差通信体制为例分析卫星振动对系统的瞬时误码率和平均误码率的影响，给出误码率仿真计算结果。

The adaptive compensation term of the optimal approximation error and a new robust term are adopted to minify the influence of modeling error and parameter estimation error.

该方案通过引入最优逼近误差的自适应补偿项和新的鲁棒项，削减建模误差和参数估计误差的影响，从而在稳定性分析中取消了要求逼近误差平方可积或逼近误差的上确界已知的条件。

Objective To investigate the relationship between ovum fertilization rate and sperm morphology, acrosome reaction in IVF and to explore the influence of parameters of sperm on fertilization rate.

目的 研究体外受精(in vitro fertilization，IVF)中精子形态、顶体反应与卵子受精率之间的关系，分析精子各参数在IVF受精率方面的参考意义。

A: I hear Mr. White wants to run for the Presidency!

我听说怀特先生要参加总统竞选！