自然しぜん放射ほうしゃ増幅ぞうふくこうじゃなかったです
shizen hōshazōfuku kōja nakattadesu

Noun
Desu Copula

The polite, past negative form of 自然放射増幅光

1. Wasn't naturally amplified light.; Wasn't spontaneous emission.

Past/Perfective
Negative
Polite
Casual Register
Physics