liquid proportional counter
related: ionization chamber
broader: proportional counter
preferred label: شمارنده تناسبی مایع @fa
type: Concept

ionization chamber
preferred label: اتاقک یونش @fa
type: Concept
related: liquid proportional counter

proportional counter
preferred label: شمارنده تناسبی @fa
type: Concept
narrower: liquid proportional counter