Then, it approximates the environment map in the same wavelet basis by keeping only the largest terms to get a non-linearapproximation of the environment-map.
At the same time it is a non-equilibrium process, linearapproximation can't describe it properly, a strong dependence of damage on stress must be taken on.
同时也是一个强烈非平衡过程，线性近似不能很好地描述它，必须采用更强烈的损伤对于应力的依赖关系。
3
With the local approximation near the rational surfaces, the analytical expressions of the evolution of non-linear tearing modes are derived from MHD equations;