背景 はいけい反射 はんしゃ りつじゃなかったです
haikeihansharitsujanakattadesu

Noun
Desu Copula

The polite, past negative form of 背景反射率

1. Wasn't background reflectance.; Wasn't the background reflectance.

Past/Perfective
Negative
Polite
Casual Register
Computing