zhè / céng / bǎohùxìng / túcéng / nénggòu / yánhuǎn / jīnshǔ / biǎomiàn / shēngxiù / dàn / bùnéng / tìdài / rìcháng / wéihù这层保护性涂层能够延缓金属表面生锈,但不能替代日常维护。This protective coating can delay rusting on the metal surface, but it cannot replace regular maintenance.