Traduction de «principle rapid and complete replacement were really » (Anglais → Français) :

If the principle of rapid and complete replacement were really to be put into practice, we should have to accept some crucial losses of quality, especially in the cases of paints and varnishes.
Si le principe de la substitution rapide et complète devait devenir effectif, nous devrons nous attendre à des baisses de qualité substantielles, surtout pour les peintures et les vernis.