This is a question for historical generalisation rather than for pure theory. 這是一個(gè)歷史的概括而不是純理論的問(wèn)題。
Obviously, many departments of application science are the extendibility of pure theory and experiment. 十分明顯,應用科學(xué)的許多部門(mén)都是純理論工作和實(shí)驗工作的實(shí)際延伸。