fuel dilution

例句：

1. 1. The engine's performance is greatly affected by the quality of the fuel it receives.
   发动机的性能受到接收到的燃料质量的影响很大。
2. 2. The chemical engineer carefully measured the concentration of the fuel dilution to ensure it met the required standards.
   化学工程师仔细测量了燃料稀释的浓度，以确保它符合所需的标准。
3. 3.The pilot noticed that the fuel dilution was too high and needed to adjust it before takeoff.
   飞行员注意到燃料稀释过高，需要在起飞前进行调整。