Значения термина virulence factor evf на английском

There's also a 3-inch touchscreen under the EVF.

Patients receiving TDF-3TC-EVF combination therapy need rigorous surveillance because this combination, although efficient, is not without significant adverse effects.

A very good EVF in fact, with a 0.39-inch OLED that packs in 2.36 million dots.

If you want to shoot without the EVF, the 2-axis tilting 3.2-inch touchscreen display is equally nice.