什么是 diffusion?The process of diffusing or the condition of being diffused.Needless profusion of words; prolixity.Physics The scattering of incident light by reflection from a rough surface.Physics The transmission of light through a translucent material.Physics The spontaneous intermingling of the particles of two or more substances as a result of random thermal motion.The spread of linguistic or cultural practices or innovations within a community or from one community to another.