中文摘要：

扩散是最重要的传质方式之一，扩散过程对于很多冶金或材料的制备过程有决定性作用。简述了固态金属中质点扩散过程中的宏观理论和微观机制，介绍了扩散过程的研究方法。

英文摘要：

Diffusion is one of the most important mass transfer manners, and Diffusion process always plays a decisive role in the process of metallurgical practices and preparation of materials. Microscopic mechanisms and its macroscopic laws of diffusion as well as methods used are mainly discussed in this paper.