求翻译：4.1.5 与腐蚀介质接触的材料、保护膜或涂层的耐腐蚀性，应经过腐蚀试验或根据已有的使用经验确认。涂层的均匀性和致密性应按照相应标准规定的方法进行检查。是什么意思？

4.1.5 and the corrosive medium contacts the material, protective film or coating, corrosion resistance, corrosion test based on existing experience with confirmation. Uniformity and compactness of the coating should be in accordance with the corresponding standard specifies the method to be checked.

4.1.5 with the corrosive medium contact material, the protective film or the coating inoxidizability, should the use experience which has confirmed after the corrosion test or the basis.The coating uniformity and the compactness should defer to the corresponding standing operating procedure the meth