boundary scattering meaning in English

边界散射

The microstructure in this system shows randomly oriented fine plate - shaped grains with multi - layered structure . the fine grains randomly oriented ( strong grain boundary scattering ) and pores in these sintered samples could decrease the electrical conductivity . however , on the other hand , the fine grains randomly oriented and pores could lead to a dramatic decrease in the thermal conductivity
烧结样品的显微结构由具有多层片状结构的颗粒组成，材料的显微结构直接影响到材料的电导率和热导率，细小颗粒和气孔的存在会引起电导率的降低，同时也能降低材料的热导率，优化材料显微结构是提高材料的热电性能的关键步骤。