超硬 ちょうこう合金 ごうきんじゃありませんでした
chōkōgōkinjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 超硬合金

1. Was not cemented carbide.; Was not a hard alloy.

Past/Perfective
Negative
Polite
Terminal Form