查询词典 error model

This model eliminates the computational error of the inertia force obtained by static equivalent principle in conventional two-mass model, and can obtain dynamic characteristic data effectively and accurately.

为降低多缸发动机曲柄连杆机构的振动，根据多刚体动力学理论，建立了参数化的曲柄连杆机构动态仿真模型，克服了传统的双质量模型中采用惯性力静力等效法的误差。

The error caused by the unsuitable choice of model factor can be avioded by the convolute analysis of dam material parameter based on the model of neural network.

利用神经网络模型对大坝材料参数进行反演，可避免建模因子的选择不当而造成的误差，精度较高。

Furthermore, the maximum absolute values of cumulative relative error of the model and the original model which doesn't consider effect on adsorption/desorption of nutrition are 11.7% and 34.18% respectively.

结果显示，实验测试值与本模型计算值的平均相对误差小于6.90%，而且，本模型与未考虑营养盐吸附/脱附作用模型的最大绝对值累积相对误差分别为11.70%和34.18%。

Besides the K-B model, a simplified model to calculate thermal conductivity was advanced which has advantage in reducing operation and cumulative error.

计算热导率可采用K-B模型或者简化模型，后者具有降低运算量，减小误差积累的优点。

Model 2:Model 1 can predicts various indicators of the regional population, but the parameters trends to uncertainty during the long-term, and the cumulative effect of error is significant.

模型一能得到关于各区域人口的各项指标，但在对人口长期趋势进行预测时，模型一中各参数存在较大的不确定性、且误差的累积效应明显，在进行长期预测时达到人口高峰后一直下降，不再有波动，这与实际历史上的三次高峰不符合，故在模型二中挖掘数据内在的相关信息，利用2001-2005年中国国家统计年鉴数据及模型一中短期预测的人口总数建立灰GM(1，1)模型对我国人口总数进行长期预测。

The improved voltage model of rotor flux is proposed in the paper. It eliminates the influence to actual system function in the voltage model of rotor flux for the proper drift problem and cumulative error of pure integral calculus tache.

提出了改进的电压型转子磁链估算模型，消除了电压型转子磁链估算模型中纯积分环节所固有的漂移问题和积累误差对实际系统性能的影响。

The method first analyses the wave decompound traffic data, sets up support vector machine model separately on basic signals and disturbing signals of different resolving rate, then compounds several forecasting results, finally the traffic forecasting result is obtained. With examples, the result shows that the model has relatively lower error rate and quite reliable.

首先对交通量数据进行小波分解，然后分别对基本信号和不同分辨率的干扰信号建立支持向量机模型，最后对多个预测结果进行合成，从而得到交通量的预测结果，并利用实例计算显示模型具有较低的误差，证明了该方法具有很好的可靠性。

This study proposes a new model of production-focused experiment model whereby an error analysis of foreigners' tones is focused on pre-selected disyllabic keywords.

本文提出新的产出性实验模式，通过事先采选的双音节关键词来分析外国人在声调产出方面的偏误。

The model as follows:〓 u =0,∈〓Ω×J u =u〓, x∈Ω chapter 3 is devoted to study the moving grid timediscretization FEM of above model, the optimal energy norm error estimate is obtained.

本文第二章重点研究了上述模型有限元算法的构造及收敛性，克服了ρ同时依赖压力p、浓度c带来的困难，证明了有限元半离散解的整体存在性和最优误差估计。

The vapour and plasma ignition times of the target are got based on the equation of heat conduction and cascade model. We suppose that the plasma is ignited when 210 generations of new electrons are born in vapour generation time. The influence of temperature on the thermodynamics and optics parameters of material also have been considered in the model. The resulting theory has good agreement with the experiment and overseas report. A blade method to measure the laser spot is given in this paper with validation and error analysis. The plasma threshold of metals in atmosphere and water ambients both are diagnosed with the light deflection and piezoelectric transducer. A Q-switched pulsed Nd:YAG laser operating at infrared (1064nm), visible(532nm) and ultraviolet (355nm) wavelengths has been used. Al、Fe、Cu are used as targets and get a similar results with both method. Theoretical and experimental analyses are applied on the influence of wavelength on the threshold have been done, both of which have shown that the plasma threshold of metals decrease as the laser wavelength increases; The plasma threshold of metals are higher in water than in air and the pressure of the shock wave in water is five times higher than in air.

从热传导方程和雪崩电离机制出发，假设当电子增值2~(10)倍时，考虑了温度对材料热力学和光学参数的影响时，得到了气化和等离子体点燃的时间，利用该模型进行计算得到的结果与国内外报道及自行通过实验测得的阈值基本一致；提出了利用刀刃法测量激光光斑面积的方法，并通过实验进行了验证和误差分析；利用光偏转装置和压电换能器分别对空气和水中金属等离子体点燃阈值进行了实验诊断，激光器均为调Q—YAG激光器(波长1064nm，532nm，355nm，脉宽10ns)，靶材分别为Al、Fe和Cu，两种测试方法得到的等离子体点燃阈值基本一致；本文从实验和理论计算两个方面讨论了波长对等离子体点燃阈值的影响，均得到了等离子体点燃阈值随着波长的增加而减小的结论；对空气中和水中不同环境下金属等离子体的点燃阈值进行了比较研究，得到了金属在水中的等离子体点燃阈值比空气中的大，且水中产生的冲击波的压强是空气中的5倍左右的结论。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。