It has been shown that the spatial distributions of F centers in the quartz Dewar are non-uniform from ESR spectrum with magnetic field gradient and 2-D ESR images. The concentration of F center is colsely related to the irradiation direction and density.是什么意思_It has been shown that the spatial distributions of F centers in the quartz Dewar are non-uniform from ESR spectrum with magnetic field gradient and 2-D ESR images. The concentration of F center is colsely related to the irradiation direction and density.在线翻译_英语_读音_用法_例句