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. 2021 Jan 21;2(3-4):213–224. doi: 10.1002/ansa.202000142

FIGURE 2.

FIGURE 2

A and B, Schematic diagram of the two novel GC×GC flow modulation approaches: A, dynamic pressure gradient modulation, repoduced with permission from  17 ; B, quasi‐stop‐flow modulation, permission from 19