components
preferred label: اجزا @fa
type: Concept
narrower: chain

timing chain
preferred label: زنجیر زمان‌بندی @fa
type: Concept
broader: chain

chain
narrower: timing chain
related: mechanical drive
related: fastener
broader: components
preferred label: زنجیر @fa
type: Concept

mechanical drive
preferred label: محرکه مکانیکی @fa
type: Concept
related: chain

fastener
preferred label: بست @fa
type: Concept
related: chain