thermal symmetry
1.Rearch on the Dirac Particle of Vaidya-Bonner-de Sitter Black Hole and the Quantum Thermal Radiation by Anti-Symmetry Null Tetrad
2.This paper uses computer to analogue detailed contact thermaI process under clos- ing arc. Opening arc and contact eletrical current by using the finite element model and computing model on thermal process of relay electric contact constructed, some results of two-dimensional axial symmetry Au-plating of Ag thermal process are given.
3.The lateral heterogeneity is mainly found in the upper mantle, while the lower mantle and the outer core of liquid state seem to be relatively homogeneous. The core mantle boundary (CMB) transition zone (D″), however, is most likely a heterogeneous chemical boundary layer embedded in a thermal boundary layer, with a temperature drop of several hundred degrees, where its topographic undulation and lateral heterogeneity will affect the spherical symmetry of the Earth model.

