The pour point depressor is soluble in nonpolar solvent and insoluble in the relatively polar solvent.
此降凝剂能溶于非极性溶剂，不溶于极性较强的溶剂。
The eluent is changed in a regular manner starting with a nonpolar solvent and gradually replacing it by a more polar one.
洗脱液以常规的顺序更换，首先用非极性溶剂，然后逐步被极性较强的所替换。
The eluent is changed in a regular manner starting with a nonpolar solvent and gradually replacing it by a more polar one.
洗脱液以常规的顺序更换，首先用非极性溶剂，然后逐步被极性较强的所替换。
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