Chemicalfog: Overall density produced by an excessive degree of development, due to unexposed silver halides being attacked by the developing solution.
化学灰雾：显影过度造成全面性增加的密度。是由于未曝光的卤化银被显影液感染所引致。
2
As to the color of metal fog, the electrochemical dissolution reaction indicates blue-purple but the chemical dissolution indicates brown.
当发生电化学溶解反应时，金属雾呈紫蓝色；而当化学溶解时，金属雾呈棕色。
3
It was found apparently from the metal fog that the applied cathodic polarization current can inhibit the electrochemical dissolution of aluminium but is not so effective on the chemical dissolution.