X-ray tube
type: Concept
broader: thermionic tube
preferred label: لامپ پرتو ایکس @fa

thermionic emission
type: Concept
preferred label: گسیل گرمایونی @fa
related: thermionic tube

electron wave tube
type: Concept
preferred label: لامپ موج الکترونی @fa
related: thermionic tube

thyratron
type: Concept
broader: thermionic tube
preferred label: تیراترون @fa

cathode-ray tube
type: Concept
broader: thermionic tube
preferred label: لامپ پرتوکاتدی @fa

thermionic tube
type: Concept
alternative label: دریچه گرمایونی @fa
alternative label: thermionic valve
broader: electron tube
narrower: thyratron
narrower: X-ray tube
narrower: cathode-ray tube
preferred label: لامپ گرمایونی @fa
related: vacuum tube
related: thermionic cathode
related: thermionic emission
related: electron wave tube

vacuum tube
type: Concept
preferred label: لامپ خلاء @fa
related: thermionic tube

electron tube
type: Concept
narrower: thermionic tube
preferred label: لامپ الکترونی @fa

thermionic cathode
type: Concept
preferred label: کاتد گرمایونی @fa
related: thermionic tube