こう分子 ぶんし材料 ざいりょうじゃありませんでした
kōbunshizairyōjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 高分子材料

1. It was not a polymer material.; It was not a high molecular material.

Past/Perfective
Negative
Polite
Terminal Form