impulse to mass ratio of nozzle

例句：

1. 1. The design of the nozzle plays a crucial role in the overall performance of the engine.
   喷嘴的设计对发动机的整体性能起着至关重要的作用。
2. 2.The engineer carefully analyzed the data and calculated the impulse to mass ratio of the nozzle.
   工程师仔细分析了数据，并计算了喷嘴的冲量质量比。
3. 3.In order to improve the efficiency of the nozzle, the manufacturer has made several modifications to its design.
   为了提高喷嘴的效率，制造商已经对其设计进行了几次修改。