GB/T 9989.3-2015
搪瓷耐化学侵蚀的测定 第3部分:用六角形容器进行耐碱溶液侵蚀的测定
Vitreous and porcelain enamels.Determination of resistance to chemical corrosion.Part 3:Determination of resistance to chemical corrosion by alkaline liquids using a hexagonal vessel
GBT9989.3-2015, GB9989.3-2015