Which languages, specifically?
FSM (Finite State Machine) in spanish would be MEF (Máquina de Estado Finito), but, as Chouls says, it's pointless to try to translate specific API terms. However, words like Int, Float, etc, are common for programmers, so they surely will know them, whichever be their native language. As for artists and such, it might be enough to translate each type description, instead of names?