質量 しつりょう欠損 けっそんじゃなかったです
shitsuryōkessonjanakattadesu

Noun
Desu Copula

The polite, past negative form of 質量欠損

1. Wasn't lacking in quality.; Didn't have a defect.

Past/Perfective
Negative
Polite
Casual Register
Physics