According to the body normal physiological changes the cubic curve model is the best model among several deferent models of curve estimation with SPSS.
根据人体的正常生理变化，三次曲线模型是SPSS曲线估计的几个模型中最合适的一个。
Methods:Power model of non-linear regression was adopted to fit the curve of incidence of malaria, which result is contrast with the same model came from curve estimation method.
方法：对疟疾发病率曲线进行非线性过程的幂函数拟合，并与用曲线参数估计法的幂函数拟合结果进行对比。
A pose estimation method, curve approaching method, is introduced and RCS reflecting figure is created.
介绍了一种空间目标姿态角估计方法，并在此基础上生成了RCS反射图。
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