こう高度 こうど放電 ほうでん発光 はっこうじゃなかった
kō kōdohōdenhakkōjanakatta

Noun
Da Copula

The past negative form of 高高度放電発光

1. Wasn't high-altitude discharge luminescence.; Wasn't high-altitude electroluminescence.

Past/Perfective
Negative