cost of flotation

例句：

1. 1.The company is using a new flotation process to improve its efficiency.
   该公司正在使用一种新的浮选工艺来提高其效率。
2. 2.The scientist used a flotation process to separate the gold from the ore.
   科学家使用一种浮选工艺将金从矿石中分离出来。
3. 3. Flotation is a method of separating solids from liquids by floating them on a liquid medium.
   浮选是一种通过在液体介质中漂浮固体物质来分离固液的方法。