Polish ⇄ Afrikaans Arabic Basque Bulgarian Catalan Chinese Croatian Czech Danish Dutch English Estonian Finnish French German Greek Hungarian Icelandic Irish Italian Japanese Korean Latvian Lithuanian Maltese Norwegian Bokmål Portuguese Romanian Russian Serbian Slovak Slovene Spanish Swedish Turkish Ukrainian

okres podstawowy
math.	Bezugsperiode f; Basiszeitraum m
pow.el.	Taktperiodendauer f
stat., fin.	Bezugszeitraum m; Referenzperiode f; Referenzzeitraum m; Vergleichsperiode f; Vergleichszeitraum m

okres podstawowy: 3 phrases in 2 subjects

Construction	2
Electronics	1