西南石油大学学报(自然科学版) ›› 1995, Vol. 17 ›› Issue (3): 143-146.DOI: 10.3863/j.issn.1000-2634.1995.03.024

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  • Received:1994-12-10 Revised:1900-01-01 Online:1995-08-20 Published:1995-08-20