If you will accomplish a part machining of hemisphere surface and ball platform face of the radius needing by using it,you only need evaluate correlative variable in the main program.

This paper discusses the reform of table tennis table.

Based on the research of the relationships between the electro-magnetic field, mechanical load and the stress, the deformation of the thin current-carrying spherical segment shells under the combined action of electro-magnetic field and mechanical load, the nonlinear electro-magnetic kinetic equations of the spherical segment were built in this paper.