A Study on the Issue of "Market Disruption"in the Legal Documents on the Accession of China to WTO;

set up the "market disruption" in the421 part of TRADE ACT 1974.

The core of the application of special safeguard measures to china is especially on how to make sure the elements of that "market disruption" and "significant trade diversion," which lie in the question of the existence of uncertainty and ambiguity.

In order to obtain the perturbed magnetic fields caused by mechanical stress, the governing equations and boundary conditions for the problems were derived based on the linearized magnetoelastic theory.

Based on the linearized magnetoelastic theory,analytical solution of the perturbed magnetic field in an infinite plate by a circular hole under extension and an external magnetic field was obtained in this paper.

Based on linearized magnetoelastic theory, the perturbed magnetic fields induced by mechanical stress and deformation in steel or other ferromagnetic structures working in the environment of the Earth magnetic field,are investigated theoretic.

The key of removerestore procedure is to remove a disturbing potential element from a reference potential model and restore related disturbing potential element in the end.