cost/performance ratio的用法和樣例：
例句
- Experiments prove that the segment is sharp and endurable,and has a satisfactory performance cost ratio.
試驗表明，該工藝制備的金剛石刀頭鋒利耐用，并具有良好的性能價(jià)格比。 - The diamond sawing blade manufactured by this method can process marble and granite with high efficiency and low cost.
研究表明，該方法制備的新型金剛石刀頭鋒利耐用并具有良好的性能價(jià)格比。
