high strength-to-density ratio

例句：

1. 1.The steel alloy has a high strength-to-density ratio, making it suitable for use in heavy-duty machinery.
   这种钢铁合金具有很高的强度-密度比，因此适用于重型机械。
2. 2.The design of the new car emphasizes its high strength-to-density ratio, which is crucial for its performance.
   新款汽车的设计强调了其高强度-密度比，这对于它的性能至关重要。
3. 3. The construction industry often uses materials with a high strength-to-density ratio to ensure durability and longevity.
   建筑业经常使用具有高强度-密度比的材料，以确保耐用性和持久性。