The codes assigned for transactions where no currency is involved是什么货币？
The codes assigned for transactions where no currency is involved（XXX）属于 ISO 4217 货币、记账或特殊用途代码，并不一定对应单一国家或国旗。CurrencyFlow 使用代码 XXX 和符号 XXX 进行识别。本页用于资料说明和分类，是否提供实时换算取决于当前数据源；任何已显示的汇率都会注明实际数据日期，也不等同于银行或交易平台的保证成交价。
主要用途
The codes assigned for transactions where no currency is involved (XXX) is an ISO 4217 monetary, accounting or special-purpose unit rather than a currency tied to one national flag. CurrencyFlow identifies it with the code XXX and symbol XXX. Its profile is shown for reference and classification; availability of live conversion data depends on the current data provider. Any displayed rate includes an actual provider date and is not a guaranteed bank or trading quote.
汇率制度
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