solvent refining

例句：

1. 1. Solvent refining is a process used to remove impurities from crude oil.
   溶剂精炼是一种用于从原油中去除杂质的过程。
2. 2. The refinery uses solvent refining to produce high-quality petroleum products.
   炼油厂使用溶剂精炼生产高质量的石油产品。
3. 3. Solvent refining is an important step in the production of refined oil.
   溶剂精炼是生产精制油的重要步骤。