立方りっぽう最密さいみつ充填じゅうてん構造こうぞうなら
rippōsaimitsujūtenkōzōnara

Noun
Da Copula

The "-nara" conditional form ("if/when…") of 立方最密充填構造

1. If/when the cubic closest packing structure

Nara Conditional
Geology