The other unit is the US Dollar, as defined in ISO 4217, the international standard describing three-letter currency codes (" USD "for the US Dollar).
另一个单位是美元，如iso 4217所定义，该国际标准描述了由三个字母组成的货币代码(“USD”代表美元)。
The standard gases we use are measured against this balance, and thus maintains international traceability since the balance USES si as the standard unit of measurement.
我社所使用的标准气体，均用此天平进行调制，把SI基本单位的质量作为标准，从而保持住国际标准。
The standard gases we use are measured against this balance, and thus maintains international traceability since the balance USES si as the standard unit of measurement.
我社所使用的标准气体，均用此天平进行调制，把SI基本单位的质量作为标准，从而保持住国际标准。
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