displacement oil ratio

例句：

1. 1.The displacement oil ratio is an important factor in determining the efficiency of the engine.
   位移油比是决定发动机效率的重要因素。
2. 2.The displacement oil ratio affects the performance of the engine.
   位移油比影响发动机的性能。
3. 3. The displacement oil ratio can be adjusted to optimize the engine's performance.
   可以通过调整位移油比来优化发动机的性能。