Such impurities requiring calibration calculation normally use main component as reference and use relativeretention time for orientation, such value are to be recorded under each type.
这些需作校正计算的杂质，通常以主成分为参照采用相对保留时间定位，其数值一并载人各品种项下。
2
Relative porosity factor value can be used to characterize the relation between the molecular size of the polymer and the its retention in the flow of polymer solution through porous media.