×
模态框(Modal)标题
在这里添加一些文本
Close
Close
Submit
Cancel
Confirm
×
模态框(Modal)标题
×
Toggle navigation
Home
About Journal
Ethics Statement
Archive
Editorial Board
Contact Us
中文
Day and Night Alternation of Natural Ultra-Low Frequency Electromagnetic Field and Its Stability Analysis
CAO Bao,QIN Qiming,LI Baishou,ZHANG Zexun,ZHANG Zili
Acta Scientiarum Naturalium Universitatis Pekinensis . 2008, (
6
): 897 -901 .