てい線量 せんりょう被曝 ひばくではありませんでした
teisenryōhibakudewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 低線量被曝

1. Was not low-dose exposure.; Was not exposed to a low dose.

Past/Perfective
Negative
Polite
Formal Register