A rocket experience an impulse from the engine, and that changes the momentum of the rocket.
火箭从发动机获得冲力，那改变了火箭的动量。
The severe influence of the rocket engine property, especially its total thrust impulse and work time on the rocket flight performance has aroused great attention among technological workers.
发动机工作性能对火箭飞行性能的严重影响已引起众多研究人员的重视，尤其是火箭发动机推力总冲及其工作时间等重要参数。
Effect of ablative cooling on specific impulse of rocket engine.
烧蚀冷却对发动机比冲的影响。
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