RBA: Abbreviation for Rebuildable atomizer.
Rebuildable Atomizer: Rebuildable Atomizers vary in design. Some have a fabric wick, while some stay more pure from burning elements and use SS mesh and kanthal wire. Rebuildable atomizers are meant to save on cost and be readily fix-able. Some incorporate a tank for holding e-liquid.
Resistance Wire: What the heating coil is made of. Two types are generally used, Kanthal and Nichrome.
RTV: An acronym for Right To Vape.