GB/T8753.2-2005
Methods for assessment of sealing quality of anodic oxide coatings on aluminium and aluminium alloys—Part 2: Phosphoric-chromic acid method with nitric acid predip
铝及铝合金阳极氧化氧化膜封孔质量的评定方法第2部分:硝酸预浸的磷铬酸法
铝及铝合金阳极氧化氧化膜封孔质量的评定方法第2部分:硝酸预浸的磷铬酸法