格子 こうし欠陥 けっかんではありませんでした
kōshikekkandewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 格子欠陥

1. It was not a lattice defect.; It wasn't a grid flaw.

Past/Perfective
Negative
Polite
Formal Register
Crystallography