本文用电子显微镜方法研究了亚硫酸钠溶解作用对显影灰雾形成过程的影响。结果表明,少量亚硫酸盐的加入使显影后的银颗粒从紧密结构变成粗银丝结构,并且发现有生成侵蚀坑的现象。我们把这些实验现象归因于溶解物理显影的发生。由于亚硫酸盐的溶解作用,卤化银颗粒的银离子通过溶解的方式迁徙到显影中心的附近,在生成银丝的同时,在颗粒靠近银丝的位置上形成了侵蚀坑。 In this paper, the effect of sodium sulfite dissolution on the development of fogging was studied by electron microscopy. The results showed that the addition of a small amount of sulfite changed the silver particles after development from a close structure to a thick silver structure, and the phenomenon of erosion pits was found. We attribute these experimental phenomena to the occurrence of dissolved physical development. Due to the sulfite dissolution, the silver ions of the silver halide grains migrate to the vicinity of the center of the developing solution by dissolution, and at the same time as the silver filaments are formed, erosion pits are formed at the positions of the particles close to the silver filaments.