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。
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