曲線 きょくせん座標 ざひょうではありませんでした
kyokusenzahyōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 曲線座標

1. Was not curvilinear coordinates.; Was not a curvilinear coordinate system.

Past/Perfective
Negative
Polite
Formal Register