In 1979 the european community ( now the european union ) nations of the european monetary system established an exchange rate mechanism, whereby member states agreed to limit the fluctuations of their national currencies within a fixed band 1979年,屬于歐洲貨幣體制的歐共體(今歐洲聯(lián)盟)各國建立了匯率體制,各成員國同意將其貨幣的波動(dòng)限制在固定的范圍內(nèi)。