solvent purification

例句：

1. 1.Solvent purification is crucial for the production of pharmaceuticals.
   溶剂纯化对于制药生产至关重要。
2. 2. The process involves solvent purification before the final product is obtained.
   该过程包括在最终产品获得之前进行溶剂纯化。
3. 3. Solvent purification is an essential step in the chemical synthesis process.
   溶剂纯化是化学合成过程中的一个必要步骤。