在水泵的选型或运行中，通常采用多项式的最小二乘法或根据假设的函数关系来拟合水泵性能曲线。
Least square method of polynomial or the method based on the given function are used to fit pump characteristic curve in pump selection or operation.
提出了描述标准击实试验中土料干密度和含水量之间函数关系的拟合正交多项式方法。
Fitting orthogonal polynomial method for characterizing the functional relationship between the dry density and moisture content of earth-fill in standard compaction test is presented.
用高阶奇数多项式拟合非线性混合函数，建立非线性信号盲分离模型。
The model of nonlinear blind source separation(NBSS) is built which the nonlinear transfer function is simulate by the P-th order polynomial function.
然后利用二次多项式模型拟合文本行的中心线，并建立径向失真校正的目标函数。
Then, it used second order polynomial to fit the Central Line of text line, and constructed the object function of lens distortion.
趋势项位移由边坡的势能和约束条件所决定，利用多项式位移函数进行拟合预测。
Trend term displacement is determined by the potential energy and constraint condition of the slope and is predicted by displacement polynomial function.
本文提出了一种用加权多项式回归对球状模型和二级套合球状模型的变差函数进行最优拟合的方法。
The paper suggests an approach, utilizing the weighted polynomial regression for the best fitting of the variogram about spherical model or two-order nested spherical model.
将本方法在周期时段划分、拟合精度、函数收敛方面与契比雪夫多项式拟合法进行了对比。
The Fourier polynomial fitting is compared with the Chebysher polynomial fitting in the division of cyclic time interval and fitting accuracy as well as convergence of function.
同时，拟合方法采用目前非常成熟的多项式最小二乘拟合。从而不仅能控制拟合函数的复杂性，而且使分段拟合的补偿区间数量达到最少，极大地降低了计算成本。
The paper adopts the method of multinomial least squares as fitting to make the fitting function be simple and the amount of compensation interval be least, reduces the calculation cost.
多项式曲线拟合是一种较常用的数据处理方法，但当数据点较多时，只采用一种多项式曲线函数拟合所有数据点难以取得较好的拟合效果。
Polynomial curve fitting is a usually used data fitting method. When there are too many data for fitting, only just one polynomial curve function cannot acquire good fitting effect.
定义了阀片电压偏差率并以此为目标函数，建立该目标函数与各均压环环直径和悬挂高度的拟合多项式关系。
The ratio of voltage warp(RVW) for the varistor is defined to simulate a polynomial of every diameter and suspended heights of the grading ring.
提出了用幂基多项式拟合频响函数的几点技巧。
Several techniques are set forth in the paper for the frequency response functions (FRFs) fitting by ordinary power polynomials.
但二次多项式只能拟合x坐标与Y坐标之间成函数关系的点序列，无法拟合闭合曲线。
But the quadratic curve can be used only in condition when each X-coordinate of the points sequence mapping to only one Y-coordinate, so it can't be used in fitting closing curve.
无论是曲面拟合法还是路径线法，各量计线上增殖误差可用时间多项式函数来表示，且多项式最高幂次数与量计线数目有关。
Propagation error for each gage can be expressed as polynomial of time and the highest power of polynomial ism-1, which mis the number of gages.
无论是曲面拟合法还是路径线法，各量计线上增殖误差可用时间多项式函数来表示，且多项式最高幂次数与量计线数目有关。
Propagation error for each gage can be expressed as polynomial of time and the highest power of polynomial ism-1, which mis the number of gages.
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