cryopumping
broader: vacuum pump
broader: vacuum technique
broader: cryogenics
preferred label: زم‌دمش @fa
alternative label: cryogenic pump
alternative label: پمپ زم‌زایشی @fa
type: Concept
scope note: cryogenic pump

vacuum pump
preferred label: تلمبه خلاء @fa
type: Concept
narrower: cryopumping

cryogenics
preferred label: زم‌زایی @fa
type: Concept
narrower: cryopumping

vacuum technique
preferred label: فن خلاء @fa
type: Concept
narrower: cryopumping