jet apex angle

例句：

1. 1.The pilot adjusted the plane's jetapex angle to optimize fuel efficiency.
   飞行员调整了飞机的喷气式尖角角度，以优化燃油效率。
2. 2.During takeoff, the jet apex angle is crucial for maintaining stability.
   起飞时，喷气式尖角角度对于保持稳定性至关重要。
3. 3. The engineer measured thejet apex angle to ensure theaircraft was flying at its maximum efficiency.
   工程师测量了喷气式尖角角度，以确保飞机在最大效率下飞行。