Based on theory analysis of metal solidification and hydrodynamics, momentum convection generated by rotating electromagnetic field do not improve feeding obviously.
据金属凝固理论和磁流体力学分析，电磁搅拌力引起的动量对流对补缩的促进作用并不大。
2
The squeezing of light in the system of two mode squeezed vacuum field interacting with a two level atom within and without the rotating wave approximation by means of quantum theory is studied.