京津地区城区乒乓球俱乐部现状调查与研究——以天津市东丽区为例
경진지구성구핑퐁구구악부현상조사여연구——이천진시동려구위례
Investigation and Study on the Present Situation of Table Tennis Club in Beijing-Tianjin Region——taking Dongli district of Tianjin City as example
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