短語詞組短語protective inorganic coating 無機(jī)涂層protective e coating 防護(hù)層thermal -protective e coating 隔熱層heat -protective coating 隔熱保護(hù)層optical protective coating 光學(xué)保護(hù)涂層;光保護(hù)涂層rubber base protective coating 橡膠基防護(hù)層antimercury protective coating [化工]防汞保護(hù)層optical fiber protective coating 光纖保護(hù)涂料 返回 protective coating