theory什么意思(density functional theory是什么意思)

　　density functional theory

　　密度泛函理论

　　N-VAR理论;学说A theory is a formal idea or set of ideas that is intended to explain something.语法信息

　　Marx produced a new theory about historical change based upon conflict between competing groups...

　　马克思创立了一种新理论，认为历史的演变是基于对立集团之间的冲突之上的。