作者：V. I. Zasimchuk, E. E. Zasimchuk 来源：[J].Metallofiz. Noveishie Tekhnol.(IF 0.108), 2019, Vol.41 (06), pp.765-774N.A.S. of Ukraine 摘要：The equation for atoms oscillation description at one-dimensional chain in approximation, which some differs from the quasi-elastic one, are received. It is solved by the perturbation theory method. The nonlinear term $f^{II}(\alpha)x_{n}x_{nn}$ is chosen as a small parameter. As...