指数在购买力平价（PPP）这一概念基础上产生，购买力平价是指货币应以使商品价格在各个国家保持一致的汇率兑换。
The index is based on the idea of purchasing-power parity (PPP), which says currencies should trade at the rate that makes the price of goods the same in each country.
自从平价体制制度废除后，基金组织成员间同意容许各国选择决定其本国货币兑换值的办法。
Since the abandonment of the par value system the membership of the fund has agreed to allow each member to choose its own method of determining an exchange value for its money.
自从平价体制制度废除后，基金组织成员间同意容许各国选择决定其本国货币兑换值的办法。
Since the abandonment of the par value system, the membership of the Fund has agreed to allow each member to choose its own method of determining an exchange value for its money.
自从平价体制制度废除后，基金组织成员间同意容许各国选择决定其本国货币兑换值的办法。
Since the abandonment of the par value system, the membership of the Fund has agreed to allow each member to choose its own method of determining an exchange value for its money.
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