常見例句雙語例句In aspect of surface conversion coating, the latest research results on rare earth conversion coating and inorganic nonmetallic conversion coating are introduced.表面轉(zhuǎn)化膜方面主要介紹了稀土轉(zhuǎn)化膜以及無機非金屬轉(zhuǎn)化膜等在該方面取得的最新研究成果; 返回 nonmetallic inorganic coating