It was comprehensively studied that the effect of pressure, temperature and modifier concentration in the mobile phase on the capacity factor, selectivity and resolution of tocopherols.

本文系统的研究了温度、压力和改性剂浓度对生育酚异构体在超临界流体色谱中分离效果的影响。

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But the single factor that can show dramatic shifts in ranking in a single year is selectivity.

FORBES: The Technology Revolution Changing College Admission