为了评价大尺寸测量量值的准确性，需要建立大尺寸测量的量值溯源体系。

The quantity traceability system is often established to evaluate the accuracy of large-scale measurement.

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对国家测量标准的溯源性不要求必须使用实验室据国的国家计量院。

NOTE 6 Traceability to national measurement standards does not necessarily require the use of the national metrology institute of the country in which the laboratory is located.

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对国家测量标准的溯源性不要求必须使用实验室据国的国家计量院。

NOTE 6 Traceability to national measurement standards does not necessarily require the use of the national metrology institute of the country in which the laboratory is located.

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