搪瓷耐化学侵蚀的测定 第2部分：耐沸腾酸、沸腾中性液体、碱性液体及其蒸气化学侵蚀的测定

Vitreous and porcelain enamels—Determination of resistance to chemical corrosion—Part 2: Determination of resistance to chemical corrosion by boiling acids, boiling neutral liquids, alkaline liquids and/ or their vapours