放射ほうしゃせん滅菌めっきんではありませんでした
hōshasemmekkindewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 放射線滅菌

1. Was not radiation sterilization.; Was not irradiated.

Past/Perfective
Negative
Polite
Formal Register