西南石油大学学报(自然科学版) ›› 1990, Vol. 12 ›› Issue (2): 123-125.DOI: 10.3863/j.issn.1000-2634.1990.02.15

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  • Received:1900-01-01 Revised:1900-01-01 Online:1990-04-20 Published:1990-04-20

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