price performance ratio的用法和样例：
例句
- Experiments prove that the segment is sharp and endurable,and has a satisfactory performance cost ratio.
试验表明，该工艺制备的金刚石刀头锋利耐用，并具有良好的性能价格比。 - Compared with the audio system based on the VBAP multi-channel effect sound technology, the proposed system has higher cost performance and is more practical.
与基于矢量幅度移动技术的多通路效果声扩声系统相比较，这里提出的系统具有更好的性能价格比，是一种更为实用的扩声系统。
