降着 こうちゃく円盤 えんばんではありませんでした
kōchakuembandewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 降着円盤

1. Was not falling in discs.; Was not a disc-shaped fall.

Past/Perfective
Negative
Polite
Formal Register
Astronomy