master curve of solid propellant

例句：

1. 1.The master curve of the engine is critical for performance optimization.
   发动机的主曲线对于性能优化至关重要。
2. 2.The master curve of the trajectory shows the vehicle's path in space.
   轨迹的主曲线显示了车辆在太空中的路径。
3. 3.The master curve of the fuel consumption was used to optimize the engine design.
   燃料消耗的主曲线被用来优化发动机设计。