ホーム > Term: parts per million (PPM)
parts per million (PPM)
(i) The concentration of solutions expressed in weight or mass units of solute (dissolved substance) per million weight or mass units of solution. (ii) A concentration in solids expressed in weight or mass units of a substance contained per million weight or mass units of solid, such as soil.
- スピーチの一部 noun
- 産業/ドメイン 地球科学
- カテゴリ 土壌学
- Company: Soil Science Society of America
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作成者
- Bob Adams
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