Translation of "termisk" into English

Han siger, problemet med termisk ligevægt er, at vi ikke kan leve der.

He says, the problem with thermal equilibrium is that we can't live there.

Dette gælder ikke for bimodalt drevne køretøjer, hvor det ene af fremdriftssystemerne er elektrisk og det andet termisk.

This does not apply to twin-propulsion vehicles in which one of the systems of propulsion is electric and the other thermic.