本文首先对选题背景和国内外相关研究观点进行了简要回顾，提出了要研究的问题及其意义。
This paper first gives a brief review of related background and some researchers' viewpoints, and raises that need to study and its significance.
本文首先介绍经济一体化的一般理论和最优货币区理论，并简要回顾欧盟以及欧洲经济货币联盟成立的过程。
This paper first introduces general theories of economic integration and optimal currency area and reviews the history of European Union and European economic and Monetary Union.
本文首先对圆柱壳的稳定性、自由振动、瞬态和稳态动力响应研究进行了简要回顾和评述。
Brief reviews about elastic stability, free vibration, transient dynamic response and harmonic dynamic response of circular cylindrical shells are given first.
应用推荐