🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsРусскийالعربيةفارسی한국어中文日本語EntityQ176449· pop 24· linked from 248 articlesvolumetric number densitycount per volumeConnectionsmoleculeEntitysolutionEntityCategoriesConcentrationDensityPlasma parametersPopulation geographyScalar physical quantities