Xu was first across the line ahead of Dutch sailor Marit Bouwmeester, who took silver.
Belgium's Evi van Acker claimed the bronze but Ireland's Annalise Murphy was edged out in fourth.
徐莉佳率先冲过终点,荷兰选手获得银牌,白俄罗斯选手获得铜牌,爱尔兰选手获得第四名。
Gymnastics great Chen, gunning for his fourth Olympic title, looked assured of victory after a superb opening routine in the final for 15.800.
*体操选手陈一冰作为开场选手,在完成了一套精彩的获得15.8的的动作后,向着自己的第四块奥运*发起冲击。
But Zanetti, second to Chen at the 2011 World Championships, pulled off a shock by scoring 15.900 as the last to go.
但曾获得2011年世锦赛该项目亚军的巴西选手扎内蒂*后一个出场,获得了惊人的15.9分。
Tweddle's score of 15.916 took bronze in her uneven bars final after a decade pursuing an elusive Olympic medal.
在追逐一块奥运奖牌十年之后,特维德尔终于以前所未有的精彩表现获得了15.916的,获得了一块高低杠的铜牌。
Russia's Aliya Mustafina won the gold medal ahead of Beijing 2008 champion He Kexin of China.
俄罗斯运动员阿利亚·穆斯塔芬纳击败北京奥运会该项目冠军何可欣获得冠军。