German ⇄ Arabic Bulgarian Chinese Taiwan Chinese simplified Croatian Czech Danish Dutch English Finnish French Greek Hebrew Hindi Hungarian Italian Japanese Korean Latvian Lithuanian Norwegian Bokmål Polish Portuguese Romanian Russian Serbian Latin Slovene Spanish Swedish Thai Turkish

Öffnungsverhältnis n
comp., MS	åbningsforhold
earth.sc., life.sc.	relativ apertur
earth.sc., met.	stråleåbning
life.sc.	relativ blændeåbning