unvarying

adj. invariable, constante

invariable | sin cambios | continuo | constante | ininterrumpido | sostenido | firme | inalterable | inmutable

Ex: An unvarying level of illumination, heating, cooling, ventilation and acoustics will give the even type of environment needed in an academic library.

(adj.) = invariable, constante
Ex: An unvarying level of illumination, heating, cooling, ventilation and acoustics will give the even type of environment needed in an academic library.