The paper comparably analyzes the last goal difference in London Olympic Games women 's volleyball match.The results show that the scoring ability of four active team is very strong, which is mainly composed of smash score followed by bloc-king score and service points.Both the Brazil and the United States have the advantage of possession in the smash and blocking. In active points, while Brazil and the United States are in blocking more points, the Japan and South Korea are in other aspects.% 对伦敦奥运会女排比赛四强得失分情况进行对比分析研究表明：伦敦奥运会女排比赛四强球队主动得分能力都很强，主动得分主要由扣球得分为主，其次为拦网得分和发球得分。巴西和美国在扣球和拦网方面占有优势。在主动失分方面，巴西和美国队在拦网方面失分较多，日本队与韩国在其他几项均有较多失分。
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