I used to know their mean, but I forget now...
I realized I have to know them
PE, SE what are they mean?
Started by Geonho Lee, July 30, 2019 · 1 Replies · 1,801 Views
PE - Preparatory Element
SE - Specific Element
Started by Geonho Lee, July 30, 2019 · 1 Replies · 1,801 Views
I used to know their mean, but I forget now...
I realized I have to know them
PE - Preparatory Element
SE - Specific Element