Imaging Science and Photochemistry ›› 1989, Vol. 7 ›› Issue (3): 77-80.DOI: 10.7517/j.issn.1674-0475.1989.03.77

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  • Received:1987-10-04 Revised:1988-10-20 Online:1989-08-20 Published:1989-08-20