J. Journal of Beijing Normal University(Natural Science), 2013, 49(2): 438-442.
Citation: J. Journal of Beijing Normal University(Natural Science), 2013, 49(2): 438-442.
shu

    Abstract
    • FullText(HTML)
  • loading
    • References (1)
    • Related Articles

Catalog

    Turn off MathJax
    Article Contents

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return