In the program, three kinds of nonlinear least-squares fitting methods were supplied for processing the complex positron lifetime spectrum.
为处理复杂的正电子寿命谱，本程序可提供三种非线性最小二乘拟合方法。
The comparison among various methods of parameter estimation shows that the least-squares fitting method in the time domain is more accurate one.
各种参数估值方法的比较表明，时间域最小二乘拟合法较为精确。
The application of curve fitting based on least-squares methods in XQY1-1 air pressure transmitter is introduced.
文中介绍了基于最小二乘曲线拟合技术在XQY1 - 1型气压传感器中的应用。
The least-squares curve fitting methods based on power functions and orthogonal functions are analyzed and compared.
对以幂函数族和以正交函数族为基底的最小二乘曲线拟合法作了对比分析。
The least-squares curve fitting methods based on power functions and orthogonal functions are analyzed and compared.
对以幂函数族和以正交函数族为基底的最小二乘曲线拟合法作了对比分析。
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