曲线拟合

At last, we analyzed the relations between the parameters of eigenfunction and the nonlinear parameters of pacing rhythm.

最后，对拟合的特征曲线参数和起搏率变异性的非线性参数进行了的相关分析，结果表明二者具有一定的相关性。

The equivalent circuit model of electrobath is obtained by the methods of electrochemical impedance spectroscopy and curve fitting.

基于电化学原理描述了双电层电容的产生及其影响，通过采用电化学阻抗谱方法和测量阶跃响应曲线并进行参数拟合的方法，建立了电解槽负载的等效电路模型。

It is seen from the fitting results between the frequency distribution curve and the empirical distribution dots that it is proper to use the generalized Pareto distribution to describe the probability distribution of the partial duration series.

从频率分布曲线与经验分布点据拟合的情况看，运用广义Pareto概率分布来描述部分历时序列的概率分布是合适的。

Based on the I-V characteristics, an energy band diagram was proposed.

通过对特性曲线的拟合，提出了基于载流子隧道效应的能带模型。

In this report, based on initial data array of annual increase of growing stock, GM(1, 1) enveloping grey surface is set up, and predictive curve is obtained by fitting initial data with differential equation according to mecha- nism of GM model. Scientific basis has been provided for determining the optimum annual cutting norm.

为合理采伐利用林木资源，本文根据全区林木年蓄积增长量原始数据列，建立GM（1，1）包络灰平面，并按GM模型建模机理，用微分程拟合原始数据，求得预测曲线，使预测值落在栽一范围内，为确定最佳年采伐限额提供了科学依据。

Applying the error and according to fitting curve equation can be greatly improved the positional accuracy of the NC equipment.

本文提出的测量方法自动化程度高，准确可靠，在很短时间内即可完成对全部几何误差的测量；根据拟合曲线方程实施的误差补偿，可以大大改善数控设备的位置精度，对提高机床加工精度具有重要意义。

With experimental datum, the models parameters are optimized with Levenberg-Marquardt algorithm, and for the best fitting curve of Fabry-Perot etalon transmittance.

根据实验测量数据，利用Levenberg-Marquardt算法对理论模型进行参数优化估值，获得测量数据的最佳拟合曲线。

The results show that in comparison with the exponential curve model and the GM (1, 1) model, the DE-GM (1, 1) model fits the measured data better and make s prediction more accurately. Furthermore, the DE algorithm is a highly effective algorithm with good properties such as high efficiency, high precision, fast computing speed and universality, etc.

结果表明，与指数曲线模型和GM(1， 1)模型相比，DE-GM(1， 1)模型能够更好地拟合实测数据，预测精度进一步提高；微分进化算法在GM(1， 1)模型参数优化过程中表现出求解速度快、计算精度和自动化程度高等特点。

The results of dynamic absorption in the organs after incorporation of 3H-TdR showed that 3H-TdR in the peripheral blood was swiftly distributed to other organs and to their peaks in Id, and was scavenged from them quickly, the formulae of incorporation pattern were described as exponential equation.

3H-TdR内污染组织器官生物动力学的研究显示，进入血液的~3H-TdR可迅速分布于各组织器官，1天内吸收达高峰，然后迅速排除，拟合的滞留曲线回归方程为指数函数方程。

In view of trust region algorithm has good global convergence for solving non-linear quadratic programming problem,the effective elastic module s damage factor and the damage distribution function is introduced by FEM updating .

鉴于信赖域算法在求解非线性二次规划问题中具有良好的全局收敛特性，同时结合有限元模型修正技术，引入有效弹性模量损伤因子和损伤分布函数的概念，在Matlab编程环境下调用ANSYS有限元程序中的APDL语言进行桥梁空间结构的有限元建模，利用信赖域算法调整局部单元的参数，通过连续损伤分布插值多项式拟合连续区段各单元的损伤分布曲线，进而实现了对连续梁桥的动力损伤识别。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！