low compression ratio

例句：

1. 1. The car's engine is designed to operate at a low compression ratio for better fuel efficiency.
   这辆车的发动机设计成在低压缩比下运行，以获得更好的燃油效率。
2. 2.In the automotive industry, low compression ratio engines are becoming increasingly popular due to their lower emissions.
   在汽车工业中，由于其较低的排放，低压缩比发动机正变得越来越受欢迎。
3. 3. Engineers are working on developing new materials that can reduce the compression ratio without sacrificing performance.
   工程师们正在研究开发新的材料，以降低压缩比而不牺牲性能。