viscous flow region

例句：

1. 1.The viscous flow region is where the liquid solidifies into a solid.
   黏性流动区域是液体变成固体的地方。
2. 2.In the viscous flow region, the particles are moving very slowly.
   在黏性流动区域，粒子移动非常缓慢。
3. 3.The viscous flow region is important for understanding fluid dynamics.
   黏性流动区域对于理解流体动力学非常重要。