Approaches to obtain ultrafine grain size for low carbon steel,such as microalloying,electromagnetic field treatment and thermo-mechanical treatment after rolling,are given in this paper.

Analyzes in detail the principle of thickness measurement of metallic waveguide iris by means of the electromagnetic field theory.

Some test practices in the reform of the electromagnetic field theory course are introduced according to the teaching plan and the conditions of the automation speciality in the Dalian science and technology university.

From Maxwell s equations in electromagnetic field theory and by the method of variation integral, a group of variational principles and generalized variational principles are built for the initial value problems of electromagnetic field theory.

In this paper a mathematic model for the bending part of cosine shape branch is set up by electromagnetic theory.

In this article, digital image processing, electromagnetic theory, computer version and computational electromagnetics were applied in getting the biology information.

In this article,the electromagnetic theory analysis of Magnetic Induction Imaging is presented in detail.

This paper discusses its formation and the relactionship between dispersion and wavelength by using the classical theory of electromagnetic field.