放射 ほうしゃ せん重合 じゅうごうではありませんでした
hōshasenjū gōdewa arimasendeshita

Noun
Desu Copula

The polite, past negative form of 放射線重合

1. Was not radiation polymerization.; Was not radiopolymerization.

Past/Perfective
Negative
Polite
Formal Register