3.The methods of chrome tannage technology and the application of studing on auxiliary agent were summarized, there were 60 pieces of refe rence documents.
综述了清洁铬鞣工艺方法及其助剂的应用,主参考文60.
4.President Zine El Abidine Ben Ali stands erect and unsmiling, sports a helmet of implausibly jet-black hair and wears a long dress-coat, studded with medals.