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Based on the analysis and research of the domestic and overseas EIT algorithms, a practical and fast EIT algorithm with better resolution---Fast Newton's One-Step Error Reconstructor dynamic algorithm is studied and realized in this dissertation. Based on a great deal of experiment researches, the EIT algorithm and performance of hardware-measuring device needed by imaging system are analyzed.

本论文在分析、研究国内外有关电阻抗成像重建算法及其研究状况的基础上，研究实现了一种实用、快速、具有一定分辨率的电阻抗成像算法——快速牛顿一步误差重构动态算法，对成像算法进行了大量的实验研究和数据分析，对成像系统所采用的硬件测量装置的性能进行了研究。

By means of choosing the parameters of recurrence formula and the autocorrelation estimation of two error signals,the step length c...

理论分析和仿真实验验证了该谐波电流检测算法的正确性和有效性。

In this paper, first of all the fundamental principle of Kalman filter is described and a recurrence formula for Kalman filter by a state vector is derived. Then a mathematical model of machining error signals is developed taking a high precision leading screw lathe as an example.

本文首先阐述了卡尔曼滤波的基本原理，导出了卡尔曼滤波的递推表达式，然后以高精度丝杠车床为例建立了加工中误差信号的数学模型，并用PB-700型个人计算机仿真。

Methods Clinical Analysis of 76 (79 eyes) refractive error caused by eye injury.

回顾性分析76例(79眼)外伤性屈光不正患者的临床资料。

The curve regression equation obtained by computer has big correlation coefficient and small calculation error.

用计算机拟合获得的曲线回归方程相关系数大，计算误差小。

The least squares technique for estimating regression coefficients minimizes this statistic, which measures the error not eliminated by the regression line.

用最小的计算方法来估计回归系数的最小值，从而来度量回归线中没有去除的偏差。

The error model identification of accelerometers on a azimuth strapdown platform system is also concerned in the dissertation. The composite 14 position test plan of the regular hexahedron and octahedron is provided, and identification results are obtained by using improved progressive regression algorithm.

本文实验研究了方位捷联平台系统加速度计误差模型辨识方法，根据最优试验设计理论设计了正六面体和正八面体组合十四位置试验计划，并用改进的逐步回归算法给出了辨识结果。

In this paper, a relative small fitting error was obtained by means of proper selection of theoretical model and design of genetic algorithm.

论文通过对理论模型的选择和对遗传算法的合理设计，取得了较小的理论拟合误差。

It is shown that this method has high precision by experiment, and the measured relative error of space length excels 0.3%.

实验结果表明，该方法标定精度高，已标定传感器测量空间距离的相对误差优于0.3%。

By contrasting the data of simulation with those of testing, the maximum relative error for simulation is 1.3% in comparison with the measured data.

与实测数据比较表明，仿真数值的最大相对误差为1.3%，为双金属复合管的设计和工艺制订提供了理论依据。

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％。