天然气分析测试的溯源性在本质上就是标准气混合物（RGM）的溯源性。

The traceability for natural gas analysis and measurement, in essence, is that of reference gas mixture(RGM).

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天然气分析测试的溯源性在本质上就是标准气混合物（RGM）的溯源性。

The traceability for natural gas analysis and measurement, in essence, is that of reference gas mixture(RGM).

youdao