遅発 ちはつ中性 ちゅうせい じゃありませんでした
chihatsu chūseikoja arimasendeshita

Noun
Desu Copula

The polite, past negative form of 遅発中性子

1. Was not a delayed neutron.; Was not a late neutron.

Past/Perfective
Negative
Polite
Terminal Form
Physics