検出 けんしゅつ可能 かのう要素 ようそじゃなかったです
kenshu tsukanō yōsojanakattadesu

Noun
Desu Copula

The polite, past negative form of 検出可能要素

1. Wasn't detectable.; Wasn't identifiable.; Wasn't discoverable.

Past/Perfective
Negative
Polite
Casual Register
Computing