pretreatment of fiber

例句：

1. 1.The process of pretreatment is crucial for the success of the experiment.
   预处理过程对于实验的成功至关重要。
2. 2. The pretreatment stage is where the material is prepared before it's subjected to a chemical reaction.
   预处理阶段是材料在化学反应之前的准备阶段。
3. 3.The pretreatment of the sample was done using a solvent that would dissolve the organic compounds.
   样品的预处理使用了一种可以溶解有机化合物的溶剂。