Terms for subject Mathematics containing Developed Design

English	Russian
develop from the original design	разрабатывать на основе оригинального проекта
many years will elapse before the theory is developed to the point where it is useful in engineering design	доводить теорию до уровня
the theory had to be developed to the point where it was useful in engineering design	доводить теорию до уровня
the theory has to be developed to the point where it is useful in engineering design	доводить теорию до уровня