Firstly, by computing the eigenvalues of linear approximationsystem, a critical condition which ensures odd point o is local center is obtained.
首先通过计算线性近似系统特征值的方法，给出了奇点o为局部中心点的判定条件。
2
And the equilibrium approximation where the system sets up a very fast equilibrium and you're allowed to use thermodynamics to help you out in solving the problem.
平衡近似是，系统建立起一个快速的平衡，你可以用热力学，帮你解决这个问题。
3
Adaptive neural fuzzy inference system (ANFIS), as a local approximation approach, could be used to model the quantitative structure-activity relationship (QSAR) of medicine.