Standard reference matter (SRM) is the basis of analytical method studying, and is reliable method of quality assurance as well.
标准参考物质(SRM)是分析方法研究的基础，也是质量保证较为可信的手段。
So, you assign values to very specific states of matter and call those the reference points for your temperature. For instance, freezing of water or boiling of water, the standard ones.
那么你对物质的，某些特殊状态指定数值，把它们叫做你的温度的参考点，比如水的冰点或沸点，它们都是标准。
The certified value of the standard reference material developed is accurate and reliable, and is approved as the national matter standard sample.
所研制的标准物质定值准确可靠，已被定为国家实物标准样品。
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