colloid floatation

例句：

1. 1. The process of colloid floatation is crucial in the purification of water.
   胶体浮选过程在水的净化中至关重要。
2. 2.Colloid floatation is a technique used to separate particles based on their size and density.
   胶体浮选是一种基于颗粒大小和密度分离的技术。
3. 3. In colloid floatation, small particles are suspended in a liquid and then allowed to settle, allowing larger particles to rise to the surface.
   在胶体浮选过程中，将小颗粒悬浮在液体中，然后允许它们沉降，使较大的颗粒上升到表面。