MOEA applied to medical health care,is smaller?sized,more easily operated,safer and more economical than other sources of oxygen supply. 膜法富氧用于医疗保健比其它氧源体积小，操作简单，安全和经济。
Recent research progress on the propylene epoxidation catalysts which use molecular oxygen or hydrogen peroxide as oxidants is reviewed. 评述了以分子氧和双氧水为氧源的丙烯环氧化催化剂体系的最新研究进展。
