查询词典 error analysis

Unfortunately, due to lack of time, the numerical error and stability analysis which is the key to developing accurate and robust algorithms are only treated superficially in the MIT undergraduate curriculum.

不幸的是，由于时间不足够，数值误差和稳定性分析是开发准确可靠的算法的关键，而它们只是很浅显地在麻省理工学院的本科课程涉及到。

An accurate analysis of observational precision and systematic error, range bias and time bias for each SLR station are also reported.

介绍了全球 SLR 资料快速分析处理的方法和定轨模型，并对各个 SLR 站的观测结果进行了评估，给出了各测站的距离偏差、时间偏差以及所能达到的测距精度。

The method in this paper is verified through ANSYS, by using the finite element modal analysis. The calculation for the derrick of an oil drilling rig shows that the error is not exceeding 1\%.

通过ANSYS有限元分析对该估算方法进行了验证，并在石油钻机井架底座的有限元模态分析中应用该方法对系统固有频率进行了估计，误差均不超过1\%。

This article takes the Lan-Cheng-Yu product oil transportation pipeline as an example, describing the idea of product oil batched transportation's transportation circle and oilcan cubage optimization design. That is to adopt trial and error method, which contracts only those could affect the optimization result and forgets the other aspects of the pipeline. Within the design life of the pipeline, the method's dynamic economic analysis is taken to decide the optimum transportation circles and the total oilcan cubage needed for the whole line.

本文以兰-成-渝成品油输送管道为例，介绍了成品油输送管道的顺序输送批次和罐容优化设计思想，即采用试算法，将管道中相同部分不参与经济比较，对优化结果有影响的部分参与比较，在管道设计寿命期内，进行方案的动态经济分析，以确定最优的循环次数和沿线需要设置的储罐容量。

The step motor can receive digital signal directly and has the ability to response outer environment immediately and has no accumulation error, which often is used in driving system. In this driving system, open-loop control system is composed of stepping motor, which can satisfy the demand not only for control precision but also for the target of economic and practicality. On this basis , the analysis of stepping motor in power calculating and style selecting is also given.

由于步进电机能够直接接收数字量，响应速度快而且工作可靠并无累积误差，常用作数字控制系统驱动机构的动力元件，因此，在驱动装置中采用由步进电机构成的开环控制方式，这种方式既能满足控制精度的要求，又能达到经济性、实用化目的，在此基础上，对步进电机的功率计一算及选型问题经行了分析。

Analysis of application effect proves that strip flatness error can be well controlled in the scope of 0～3 I in stable rolling condition and close loop feedback control method satisfies the need of high precision control for cold rolling strip flatness. cold rolling ; Clecim AFC system ; multivariable optimum control

本文对国内某厂引进的Clecim冷轧AFC系统的控制原理和控制特点作一介绍，并对实际的板形控制效果进行分析说明。1闭环反馈控制原理Clecim冷轧AFC系统的控制原理如图1所示，板形检测值与目标板形相比较得到板形误差分布，通过多变量优化控制求

Based on the analysis and summary of basic ideas and methods,this thesis proposes two new estimation of error of higher order approximation.

方法二是在等距分布的条件下，基于三次样条插值函数的三弯距算法，通过利用节点处弯距的加权和近似计算区间中点处的二阶导数。

An optimum model, which was suitable for dynamic calculation , was put forward based on the analysis of oversaturated flow and a method of time smooth was provided in order to reduce the error due to random characteristics of traffic system.

在此基础上，以 SIGNAL94为基本模型，针对北京市交通的实际情况，建立了适合北京市交通特性和动态计算的排队长度优化模型。

In order to improve the kinematics accuracy of parallel machine tool and to simplify error resource model (including 42 errors), a new kind of algorithm on parallel mechanism structural errors reorganization is proposed in this paper based on the fast algorithm of parallel mechanism forward displacement analysis.

为了提高并联机床的运动精度，针对简化误差源模型（含42个误差量），基于并联机构位置正解的快速算法提出了一种结构误差识别的新算法。

The new method can avoid fluorescence quench caused by high concentration of measured fluid and personal error. It is especially suitable for fluorescence analysis of condensate oils, light oils and some mud additives with lower wavelength than 400 nm.

该评价方法克服了荧光自熄和浓度消光现象，避免了人为产生的误差，测试结果有效性强，特别是对于凝析油、轻质油及荧光发射波长小于400nm的钻井液添加剂的荧光评价更为有效。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。