velocity of combustion

例句：

1. 1.The speed of the flame is determined by the temperature and pressure of the air.
   火焰的速度由空气的温度和压力决定。
2. 2. The scientist used a high-speed camera to capture the motion of the flame.
   科学家使用高速摄像机捕捉火焰的运动。
3. 3. The study of combustion velocity is crucial for understanding the behavior of fire.
   研究燃烧速度对于理解火的行为至关重要。