拟合曲线

The rise stress-strain curves of recycled aggregate concrete are similar to those of the normal concrete, cubic polynomial are proposed for the rise stress-strain curve of concrete, and the peak strain are higher than normal concrete.

应力应变曲线的上升段与普通混凝土相似，都是用3次多项式拟合，其峰值应变比普通混凝土高。

A non-linear least squares method was adopted to fit the phenomenological parameters of sedimentation curves, and the experimental results were compared with the Oka' s theory.

采用非线性最小二乘法拟合了沉降曲线的现象学参数，并将实验结果同Oka理论进行了比较。

It is devised based on iterative curve fitting where orthogonal polynomials are used.

这种算法设计利用基于正交多项式的迭代曲线拟合，可以在没有人为干预的情况下自动处理吸收和发射光谱。

Secondly, a method based on SCADA to revise the parameter of transformers is proposed, in which the data is obtained from the substation SCADA system and is processed by least orthogonal square method, then the fitting calculation of the curve is performed, finally the actual parameters of the transformer can be derived and it can be used as the basic data for the economic operation of the transformer.

通过变电站监控系统得到SCADA实时数据，采用最小正交二乘法，对变压器损耗曲线进行拟合计算，得到变压器实际参数和功率损耗特性，并以此作为变压器经济运行的基础数据。

Finally,the mathematical expression be given outby curve fitting the simulation result base on the polynomial least square method.

最后利用最小二乘法对模拟结果进行曲线拟合得出收缩量与影响因素之间的函数关系，给出了数学表达式。

By applying the accumulative method which is a new technique for fitting a curve to parameter estimation of GM (0, N), it avoids complicated matrix operation, reduces operation time and keeps high accuracy and many model characters. Thus it is of great benefit to practical application.

通过将累积法这种新的曲线拟合技术引入到GM（0，N）模型的参数估计之中，避免了复杂的矩阵运算，减小了运算量，同时精度高且不改变模型的许多性质，对于实际应用有一定的意义。

Methods Exponential curve was employed in studying time series of typhoid and paratyphoid （ 1997 - 2003 ） and incidence rate of year 2004 was predicted based on the prediction model.

对伤寒、副伤寒发病率时间序列（1997～2003）采用指数曲线拟合，并对2004年伤寒、副伤寒疫情作出预测。

It is difficult to get partial derivative in least square fitting method,and the problem was avoided by usi...

利用遗传算法实现了产出曲线的自动拟合，避免了最小二乘法中求偏导数困难的问题，提高了求解的速度和精度。

The results showed that Pearson type III distribution could suit the evaluation of proportion for the area well.

结果表明这种分布曲线与观测值能很好的拟合。

Corrosion rate and interface capacity of iron in acidic perchloride solutions cantaining decylamine, dipentylamine and dodecylamine with or without chloride ion have been measured by curve-fitting method of weak polarization data and AC impedance technique.

用弱极化曲线拟合和交流阻抗技术测定了铁在含或不含Cl~-的癸胺，二戊胺和十二烷基胺酸性除氧溶液中腐蚀速度和界面电容。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。