diffusion/dɪˈfju:ʒn; dɪ`fjuʒən/ n[U]diffusing or being diffused 散布; 传播; 弥漫; 扩散 the diffusion of knowledge through books and lectures 通过书本和授课进行的知识传播 the diffusion of gases and liquids 气体和液体的扩散.
牛津英汉双解词典