local pressure gradient

例句：

1. 1.The local pressure gradient is responsible for the flow of water in rivers and streams.
   局部压力梯度是河流和溪流中水流流动的原因。
2. 2. The study of local pressure gradients has led to significant advances in engineering design.
   研究局部压力梯度在工程设计方面取得了重大进展。
3. 3. The local pressure gradient can vary greatly depending on the location and depth of the water body.
   局部压力梯度可以根据水体的位置和深度有很大的变化。