barriers
narrower: subsurface barriers
narrower: plastic barriers
related: flow resistance
related: polystyrene beads
related: screens
related: blockage
related: water conservation
broader: facilities and structures by purpose
type: Concept
preferred label: مانع @fa

polystyrene beads
preferred label: مهره پلی‌استیرن @fa
type: Concept
related: barriers

blockage
preferred label: انسداد @fa
type: Concept
related: barriers

subsurface barriers
preferred label: مانع زیرسطحی @fa
type: Concept
broader: barriers

flow resistance
preferred label: مقاومت شارشی @fa
type: Concept
related: barriers

plastic barriers
preferred label: مانع مومسان @fa
type: Concept
broader: barriers

screens
preferred label: غربال @fa
type: Concept
related: barriers

water conservation
preferred label: حفاظت آب @fa
type: Concept
related: barriers

facilities and structures by purpose
preferred label: هدف تاسیسات و سازه‌ها @fa
type: Concept
narrower: barriers