非受迫性失误

李娜的得分方式总体来看：对方非受迫性失误所占比例最高，其次是对方受迫性失误，最后是自己的制胜球。

From scoring modes of Lina , generally , unforced error of the counter party takes most proportion , then forced error and winning of her own at last .

在周二的比赛中，她只遇到过两个破发点，出现了7个非受迫性失误，取得17记制胜球。

She faced only two break points Tuesday , and had a mere 7 unforced errors to 17 winners .

根据排球比赛的制胜规律，首次提出排球比赛中“运动队非受迫性失误”的概念，并研究开发了其13项二级指标。

According to the winning methods in the volleyball , we put forward firstly the concept of unforced errors in volleyball match , and developed of13 secondary indicators .

一旦这样的情况发生，你就会老想着自己大打折扣的身体状态而不是向你嗖嗖飞来的网球了，于是你丢失了场上的注意力进而开始制造非受迫性失误。

Once that happens , Kovacs says , you think about your compromised condition rather than the ball zinging toward you , and you lose concentration and start making unforced errors .

随后找回状态的张继科连追5分并把比分反超为9比8，但最后这位青岛小伙又出现了2次非受迫性失误，以12比14输掉了第一局。

Coming back to his normal level of play , Zhang pulled five points in a row to overtake the lead 9-8 , but the Qingdao native again stumbled before losing it 14-12 with two unforced errors in the end .

在得失分方面，女子优秀选手的得分手段主要依靠是发球和正手击球；而在失分上，主要集中在接发球和底线的非受迫性失误。

The aspects of gain and lost point . The excellent women players mainly depend on the service and the forehand to gain points . While the lost points are the result of unforced errors in the receive and the baseline .

在红土场地的比赛中，中国优秀女子网球选手的非受迫性失误高于外国优秀女子网球选手，而制胜分水平却低于外国选手。

Moreover , Chinese players are less offensive on the net technology than foreign players . 6 . In the clay court game , the Chinese elite female tennis players ' unforced errors are higher than foreign elite female tennis players ' .

张继科在4年前仅仅用了15个月就赢得了世锦赛、世界杯和奥运会的冠军，并成为大满贯球员，这次却出现了太多的非受迫性失误，也没能展现出令人轻易折服的标志性反拍。

Zhang , already a Grand Slam winner four years ago after crowned at the World Championships , World Cup and Olympic Game in just 15 months , made too many unforced errors and failed to perform his trademark backhand to easily surrender .