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国际单位制(简称 SI)是1960年第十一届国际权度大会(CGPM)建议的一种单位制。国际标准化组织(ISO)于1969年2月制订出 ISO/R1000号推荐标准,决定采用 SI 单位制,并从1971年1月开始在ISO 标准中使用。以后,又于1973年2月
The International System of Units (SI) is a unit system proposed by the CGPM at the 11th International Conference on Weights (1960). The International Organization for Standardization (ISO) developed the ISO/R1000 recommendation in February 1969 and decided to adopt the SI unit system. It has been used in the ISO standard since January 1971. Later, again in February 1973