電磁 でんじ相互 そうご作用 さようじゃありませんでした
denjisōgosayōjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 電磁相互作用

1. Was not electromagnetic interaction.; Wasn't an electromagnetic interaction.

Past/Perfective
Negative
Polite
Terminal Form
Physics