添加 てんか部分 ぶぶん要素 ようそでしょう
tenkabubun'yōsodeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 添加部分要素

1. Probably adding elements.; Likely to include parts.

Polite
Presumptive
Conjecture
Computing