西南石油大学学报(自然科学版) ›› 1990, Vol. 12 ›› Issue (2): 126-128.DOI: 10.3863/j.issn.1000-2634.1990.02.16

• 论文 • Previous Articles    

  

  • Received:1989-06-17 Revised:1900-01-01 Online:1990-04-20 Published:1990-04-20