fuel-battery power-to-weight ratio

例句：

1. 1. The efficiencyof the engine is directly related to its power-to-weight ratio.
   发动机的效率与其功率重量比直接相关。
2. 2.The design of the car's battery system has a significant impact on its power-to-weight ratio.
   汽车电池系统的设计方案对其功率重量比有显著影响。
3. 3.The new model uses a more efficient fuel-battery power-to-weight ratio, resulting in improved performance.
   新款模型采用了更高效的燃料-电池功率重量比，从而提升了性能。