1XU Tong1,WU ZhenSen2,HU YanLi1,WU Jian1,SUO YuCheng1 & FENG Jian1 1 National Key Laboratory of Electromagnetic Environment,China Research Institute of Radiowave Propagation,Qingdao 266107,China,2 School of Science,Xidian University,Xi’an 710071,China.Statistical analysis and model of spread F occurrence in China[J].Science China(Technological Sciences),2010,53(6):1725-1731. 被引量:4