完全 かんぜん放射 ほうしゃ たいじゃありませんでした
kanzen hōsha taija arimasendeshita

Noun
Desu Copula

The polite, past negative form of 完全放射体

1. Was not a perfect radiator.; Was not a black body.

Past/Perfective
Negative
Polite
Terminal Form
Physics