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Concept information

There is no term for this concept in this language

优选词,正式主题词

0112/2///62720#UAD925Parts per million (en)  

定义

  • Dimensionless unit for concentration. Recommended practice is to use specific units such as $ug/l$.

上位概念

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URI

https://vocab.sentier.dev/units/unit/PPM

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