词汇	dihydroxy naphthalene
释义	dihydroxy naphthalene 二羟萘
随便看	urban water supply and drainage urban water supply area urban water supply enterprises urban water supply equipment urban water supply industry urban water-supplying area urban water supply network ur-ban water supply network urban water supply pipe network Urban water supply security urban water supply system urban water system urban water system health urban water use urban water use quantity Urban Waterway urban weak group urban wear urban weather urban weaving urban weed community Urban well-being urban western urban wetland urban wetland ecology system