دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

abbr: an indicator of the acidity or alkalinity of a substance or solution, represented on a scale of 0-14, 0-6.9 being acidic, 7 being neither acidic nor basic (i.e., neutral),and 7.1-14 being basic. These values are based on hydrogen ion content and activity.

hydrostatic pressure.