Subject	English	German
opt.	aberration of axially symmetrical systems	Aberration achsensymmetrischer Systeme
astr.	axially symmetrical system	axialsymmetrisches System
tech.	component of a symmetrical system	Komponente eines symmetrischen Systems
opt.	non-symmetrical optical system	asymmetrisches optisches System
tech.	symmetrical co-ordinates in a system	symmetrisches Koordinatensystem
automat.	symmetrical equation system	symmetrisches Gleichungssystem
el.	symmetrical polyphase system	symmetrisch gebaut und betriebenes Mehrphasensystem
tech.	symmetrical system	symmetrisches System