The method of least squares curve fitting is used proverbially for the test data processing,etc.It is inequitable to process physical parameters by some usual methods of curve fitting.

• 在实际问题中测得的实验数据有时需寻求简单函数逼近来分析,曲线拟合的最小二乘法在解决这类问题的数据处理和误差分析中应用非常广泛。