1990-2005年中国女子400 m栏成绩发展态势及灰色拓扑预测研究
1990-2005년중국녀자400 m란성적발전태세급회색탁복예측연구
Research on Development Trend of Chinese Women's 400 m Hurdling form 1990 to 2005 and grey topology method prediction
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