【摘要】 乒乓球比赛中"无遮挡发球"规则的实行,使发球的突然性、隐蔽性和威胁性受到了影响,对此问题进行了初步分析,对训练实践提供参考。更多还原

【Abstract】 The implementation of uncovered service in table tennis game has affected the unexpectedness, concealableness and threateningness of service. Preliminary analysis on such a impact to table tennis were made in the article in reference to training.更多还原