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。
In the program, three kinds of nonlinear least-squares fitting methods were supplied for processing the complex positron lifetime spectrum.
研究了最小二乘拟合方法在CCD型光学多通道分析仪波长标定中的应用。
The application of the least square polynomial fit method in the wavelength calibration of the Optical multichannel analyzer with a CCD detector is investigated.
用参数可分离非线性最小二乘拟合方法，根据少量测量数据较准确地求得了太阳电池双指数数学模型。
Solar cell both exponent mathematical model can be obtained exactly using a few measurement data by the least squares fitting method that parameter can be separated.
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