4ZHANG Peiyu & HAN Yanben1. Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China,2. Beijing Astronomical Observatory, Chinese Academy of Sciences, Beijing 100012, National Astronomical Observatory, Chinese Academy of Sciences, Beijing 100012, China.“Double dawn”eclipse and the rotational variation of the earth[J].Chinese Science Bulletin,2000,45(11):988-991. 被引量:2