ネプツニウム系列 けいれつではありません
neputsunyūmukeiretsudewārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of ネプツニウム系列

1. Not of the Neptunium series.; Not a Neptunium series [item/member].

Negative
Polite
Formal Register