查询词典 overall error

This paper makes further research on the error,caused by use of a single step or a variable step of Runge Kutta to solve the Euler equation of quaternion method, find that the large error results from cumulated error with single step, and when using the variable step,the cumulative error is less.

结果表明，定步长时有很大的累积误差，单位四元数的"单位"性不能得到满足，而变步长有明显的改观，对一般的飞行模拟状态，都能得到较好的模拟结果，可以在实际中使用。

The error source of CMM is complex, and the current main research is its geometric error. In the paper, 21 items of geometric error are measured accurately, simply and fast with the 2-D laser interferometer and four quadrants photo detector. The measurement gets rid of measuring so many lines and several diagonal lines in linear displacement method, and also solves the question that error measure of large-scale CMM can not be measured with 1-D ball array and ball plate conveniently.

坐标测量机的误差源纷繁复杂，当前主要研究的是其几何误差，课题中研究了一种采用二维激光干涉仪和四象限光电探测器相结合的测量方法，对三坐标测量机的21项几何误差进行了准确、简便、快速的测量，摆脱了线位移法测量直线过多且包含多条对角线测量的弊端，同时也解决了一维球列和球板不方便检测的大型测量机的误差检测问题。

Parameter RESOLUTION Offset Error Gain Error Differential Nonlinearity Integral Nonlinearity TEMPERATURE DRIFT Offset Error Gain Error POWER SUPPLY REJECTION RATIO ANALOG INPUTS1 Differential Input Voltage Range Differential Input Resistance Differential Input Capacitance Input Bandwidth VSWR 2 POWER SUPPLY 3 Supply Current IAVCC (AVCC = 5.0 V) IEVCC (EVCC = 3.3 V) IVDD (VDD = 3.3 V) Total Power Dissipation 4

参数解决方案偏移误差增益误差微分非线性积分非线性温度漂移偏移误差增益误差电源抑制比1模拟输入；差分输入电压范围差分输入电阻电容输入带宽差分输入电压驻波比2电源3电源电流IAVCC（AVCC = 5.0五）IEVCC（EVCC = 3.3伏） IVDD（VDD的= 3.3伏）总功率耗散4

The effective prediction space concept is established, On the base of these, this paper deduces two representations' evaluating equation, one evaluates the prediction error and the other evaluates the prediction error in limited space. First, the error transfer characteristic among subsystems at different space locations is analyzed, and the direct transfer characteristic from discrete standard measure space to the workpiece measure space under measured in measure system is proven. Second, the error reconstruction condition and method of mapping from discrete standard measurement system to continuous standard measurespace are analyzed.

分析了不同空间位置子系统间的误差传递特性，证明了在测量系统中离散标准量值空间向被测量工件量值空间的直接传递性；分析了离散标准量系统向连续量值空间映射的误差重构条件和方法；基于测量样本的有限距离的平稳性，证明了预报模型对动态测量误差的有限收敛性和预报误差的可测度性，进而证明了以离散标准量值系统对被测工件预报修正的可行性和合理性。

The magnitude of coning error which is affected by the fixing error , gyro' s quantizing error and frequency band , and so on is deduced based on the analysis of kinematic mechanism of coning error generation.

本文在分析了圆锥误差的运动学机理的基础上推导了由于安装误差、陀螺量化误差、陀螺频带选取等因素影响下圆锥误差的大小。

The latter two all reckon that basic shape of line element error band based on control points error is "dumbbell-shape",i.e.error in control end points is larger than points error between two control points.

后两者均认为以控制点点位误差描述的线元的误差带的基本形状呈"哑铃"形，即认为线元上端点的位置不确定性大于端点之间的点的位置不确定性。

Based on the analysis of error characteristics and performance effect of the mostly used crystal oscillator, a method to simulate the frequency error of crystal oscillator is proposed. The major idea is to determine the Allan variance parameter of each main stochastic error component at the given sampling interval at first, then to deduct a set of corresponding frequency error series and superpose them together.

该文对在GPS接收机中使用最多的晶振的误差特性和性能影响进行了分析，在此基础上提出了一种模拟晶振频率误差的方法，即首先确定晶振在给定取样时间间隔上各主要随机误差成分的Allan方差参数，由此反演产生相应的各项晶振频率误差模拟序列并进行叠加。

The major results are summarized as follows: When there is initial error only or model parameter error only in the Lorenz system, the error growth and predictability limit are comparable between two kinds of error problems. This result holds basically for the wide range of parameter space of Lorenz system.

结果表明：在初始误差和参数误差单独存在时，系统的可预报期限随误差大小的变化规律基本上相同；对于相同的误差大小，初始误差和参数误差对系统可预报期限的影响几乎相同，这一结果基本上不随参数范围的变化而变化。

Thirdly, on the base of the existent error estimate of elliptical Galerkin projection operator, obtain semi-discrete and complete-discrete error estimates betwent EFG solution and exact solution of parabolic partial differential equation. Semi-discrete error estimate show that the rank of r is accordance with the approximation rank of subspace S_h. Complete-discrete error estimates show that it not only have relation with radius r of domain of influence, but also have relation with the step length of time variable and the way of discrete.Lastly, give typical examples and draw up procedures of MATLAB.

再次，在"椭圆Galerkin投影"算子的误差估计的基础上，对用EFG法解抛物型偏微分方程的EFG解与精确解之间作了半离散和全离散的误差估计，半离散的误差估计表明所给出的误差界限关于r的阶是与子空间S_h的逼近阶相一致的，全离散的误差估计表明所产生的误差不但与影响域半径r有关，而且与离散时间变量的步长τ及其离散方式有关。

According to the definition of the relative error, the incorrect expression of the maximum relative error is corrected. The author analyses the distinction between the maximum relative error and the practical relative error.

根据相对误差的定义，纠正了教材中测量值的最大相对误差表达式中的错误，分析了最大相对误差和实际相对误差的异同。

Objective To study the effect of chitosan in the prevention of fibrous scar formation in the epidural space after laminectomy.

目的 观察选择性脊神经后根切除术椎板切除后硬膜外几种防瘢痕粘连物质的作用并探讨其机制。

On his way to the lift, he looked back to us or was it me his eyes pointing?

当他要进电梯时，他回头看我们（或者说是我，他的眼光？