9Zhang Yuwen, Wu Yuyuan, Gong Jianying, et al. The experimental study on the performance of a small-scale oxygen concentration by PSA[J]. Separation and Purification Technology, 2005, 42 : 123-127.
10Ruthven D M, Farooq S, Knaebel K S. Pressure Swing Adsorption[M]. New York: VCH Publishers Inc., 1993.
