concentration (activity) of hydrogen ions in water solution or fluid phase of soil. A. is specified by pH (a negative log of the hydrogen ions' activity).
«Акидитй (оф натурал ватерс, соилс)» бўйича 1 та натижа
concentration (activity) of hydrogen ions in water solution or fluid phase of soil. A. is specified by pH (a negative log of the hydrogen ions' activity).