Newtonian flow

例句：

1. 1. The Newtonian flow of a liquid is determined by its density and viscosity.
   液体的牛顿流由其密度和粘度决定。
2. 2.In Newtonian flow, the pressure gradient is constant along the streamline.
   在牛顿流中，压力梯度沿流线是恒定的。
3. 3. Newtonian flow models are used to predict the behavior of fluids in complex geometries.
   牛顿流模型用于预测复杂几何结构中流体的行为。