六方 ろっぽう最密 さいみつ充填 じゅうてんでしょう
roppōsaimitsujūtendeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 六方最密充填

1. Probably hexagonal close packing.

Polite
Presumptive
Conjecture
Geology