fuel-to-moderator ratio

例句：

1. 1.The engine's fuel-to-air ratio is critical for its performance.
   发动机的燃料与空气比对其性能至关重要。
2. 2.The design of the aircraft's fuel tank requires careful consideration of the fuel-to-air ratio.
   飞机油箱的设计需要仔细考虑燃料与空气比。
3. 3. The pilot adjusted the throttle to maintain a fuel-to-air ratio that would allow the plane to fly at maximum efficiency.
   飞行员调整了节气门，以保持燃料与空气比，使飞机能够以最大效率飞行。