pretreatment of oil bearing materials

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. Before starting the experiment, it's important to understand the pretreatment steps.
   在开始实验之前，了解预处理步骤是很重要的。
3. 3. The pretreatment stage involves cleaning and drying the sample before analysis.
   预处理阶段涉及在分析之前清洁和干燥样品。