pre-equilibration column

例句：

1. 1.The pre-equilibration column was used to determine the initial concentration of the solute in the sample.
   预平衡柱被用来测定样品中溶质的初始浓度。
2. 2. During the pre-equilibration column, the solvent flows through the column and elutes the solute.
   在预平衡柱过程中，溶剂通过柱子流动并洗脱溶质。
3. 3.The pre-equilibration column was used to separate the two components of a mixture before they were analyzed.
   预平衡柱被用来分离混合物中的两种成分，以便进行分析。