西南石油大学学报(自然科学版) ›› 1991, Vol. 13 ›› Issue (3): 108-110.DOI: 10.3863/j.issn.1000-2634.1991.03.015

• 计算机应用、管理科学 • Previous Articles     Next Articles

  

  • Received:1990-09-12 Revised:1900-01-01 Online:1991-08-20 Published:1991-08-20

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