/riːˌvæljuːˈeɪʃən/
the act of increasing the value of a country’s currency in comparison with the currency of other countries:
verb
revalue
to increase the value of the money of a country when it is exchanged for the money of another country 提高（货币的）兑换价；使（货币）升值
The yen is to be revalued.
日元的兑换价将调高。