D. Calculate the cost performance index.

计算成本绩效指数。

Now if you see the Performance index it will have the new value.

如果你现在看到的性能指标将有新的价值。

The stability is an important performance index of power system.

电力系统的稳定性是电力系统的主要性能指标。

Noise is an important performance index for appraising gear unit.

噪声是评价齿轮装置性能的一项重要指标。

Test results show the system meets the designed performance index.

测试结果表明系统满足设计技术指标要求。