zincate造句
cobaltgreen(unmixedcobalatzincate)Acalled"178"brighteningagentforalkalinezincatebathwaspreparedbycondensation,quaternization....
cobaltgreen(unmixedcobalatzincate)Acalled"178"brighteningagentforalkalinezincatebathwaspreparedbycondensation,quaternization....