Optimizing Way of Oxygen Supplying for Industry in Cities Zhao Lihe,Shen Youting Abstract In order to improve the ecnomical efficiency of oxygen supplying for industry in cities,we have studied out a optimal way to make a system of supplying oxygen in this paper.Thus,a scientific reference is given for planning to concentrate oxygen supplying in whole city or its part.And a decisive method is made for selection in plans of oxygen supplying and forms of oxygen transferring for a certain department. 10， 七 七 ， 七 七 七 ， 七 凡 七 七 七 七 名 七 七