power to weight ratio

例句：

1. 1. Thedesign of the new car has a powerto weight ratio of 50:1.
   这款新车的功率重量比为50:1。
2. 2. The efficiency of theengine is directly related to its power toweight ratio.
   发动机的效率与其功率重量比直接相关。
3. 3. The weight of the aircraft isreduced by using lighter materials with a higherpower to weight ratio.
   使用轻质材料并提高其功率重量比可以减轻飞机的重量。