jung hyun » 郑贤 in principle，back strips shall not be used for welded joints » 原则上，支持带不得用于焊接接头的过度使用 ..
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目的：观察股内侧肌和腓肠肌疲劳后反应时的变化及应用郑怀贤教授创立的郑氏按摩手法对这种变化的影响。
AIM: To observe the changes of reaction time of muscle vastus medialis and gastrocnemius after fatigue and the interventional effects of Zheng's massage initiated by Zheng Huaixian on the changes.
八卦龙形剑由我国著名武术大师郑怀贤先生创编。
Dragon Sword of Bagua is created by Zheng Huaixian, the famous Wushu master of China.
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