酸化 さんかジルコニウムじゃありませんでした
sankajirukoniumujārimasendeshita

Noun
Desu Copula

The polite, past negative form of 酸化ジルコニウム

1. Was not oxidized zirconium.; Was not zirconium oxide.

Past/Perfective
Negative
Polite
Terminal Form