He served 17 double faults.

他有17次双发失误。

He has served a number of double faults in this set.

他在这盘发球出现了一些双误。

He served too many double faults.

他出现了过多的两次发球失误。

In the ninth game, with the score 4-4, he hit four double faults.

在第九局四比四的比分的情况下，他双发四次失误。

A method of single and double faults diagnosis in RLC linear network is pro posed.

提出了一种对RL C线性无源网络单、双重故障的诊断方法。

Ferrer won 11 points in the third set, when he committed 13 unforced errors and hit three double faults.

费雷尔在第三盘中拿下了十一分，并且有十三次非受迫失误和三次双误。

Analysis shows that the control core has a feature very similar to FSE (Fail Security) for a single fault or some sequent double faults.

分析表明，双微机核对于单故障和一类有序双故障具有非常类似于FSE(故障保险)的特征。

Although Flavia Pennetta recover a board, but she in the next serve critical moment appear double faults, make han Xinyun in 6 than 4 pulled a plate.

虽然佩内塔追回一局，但她在接下来的发球局关键时刻出现双误，使韩馨蕴以6比4扳回一盘。

An accurate calculation method for complex faults of double power lines on the same tower is introduced.

介绍同杆双回线复杂故障的精确计算方法。

Although fault component current phase selector has excellent performance for single transmission lines, it may select unwanted phase for cross-country faults in double-circuit lines on a same tower.

相电流差突变量选相元件在单回线故障中具有良好的选相性能，但在同杆双回线跨线故障中可能误选相。

The geological condition of Yuanmanguan RCC double-curvature arch dam of very complex, and there are eight crannies and nine faults.

园满贯碾压混凝土双曲拱坝地质条件复杂，坝区内有八组裂隙和九条较发育的小断层。

A new rotor faults diagnosis method for induction motors based on the double PQ transformation is presented.

提出了基于双PQ变换的感应电机转子故障诊断新方法。

The processing, production equipment, main technical points and dosage design of double wall corrugated PVC pipe are introduced, and the results of faults and its solutions in production are analyzed.

介绍了生产聚氯乙烯（ PVC）双壁波纹管的工艺流程、生产设备、工艺控制要点及配方设计，分析了生产中出现故障的原因，并提出解决措施。

In this paper, the causes of faults in the hydraulic capstan and troubleshooting methods were described, and the made method for the double-slide clutch was proposed.

通过对某船液压绞缆机故障的分析和排除，阐述了该绞缆机故障产生的原因、排除方法以及油马达十字形滑块联轴器的制造方法。

By analyzing the faults occurring on the 2 500 medium plate double-edge rolling-cut trimming shears, measures of improving the performance of the shears were put forward, and good effects obtained.

通过对韶钢第二轧钢厂2 500滚切式双边剪故障分析，提出并实施了改造措施，取得了良好的效果。

The results show that occurrence of the single or double pole block on the DC lines, or short-circuit faults on the DC or AC lines will not influence seriously on power system stability.

仿真结果表明：当南桥、华新换流站发生直流输电单双极闭锁以及交、直流侧 短路 故障时，不会给系统带来稳定问题。